timing belt pulleys - Boston Gear

INSERT (3 JAW) TYPE 

SHAFT COUPLINGS 

SECTION CONTENTS 

GENERAL DESCRIPTION / SELECTION PROCEDURE.................................................................92 

STEEL—BORED & SOLID HUBS.....................................................................................................93 

SPIDER RING (3 JAW) TYPE ....................................................................................................................94 

SHEAR TYPE..............................................................................................................................................95 

CLAMPING TYPE .......................................................................................................................................96 

MULTI-JAW TYPE ......................................................................................................................................97 

RIGID (ONE PIECE) TYPE .........................................................................................................................97 

SLEEVE TYPE ............................................................................................................................................98 

ENGINEERING INFORMATION...............................................................................................................148 

Gear Catalog 91 

®

92 Gear Catalog 

® 


INSERT (3-JAW) TYPE FC SERIES 

COUPLING INSERTS 

PRECISION MACHINED BORED OR SOLID HUBS 

THREE TYPES OF INSERTS for different service requirements. 

NO LUBRICATION NEEDED 

BORE SIZES FROM 3/8" TO 2-1/8" 

COMPLETE WITH KEYWAY AND SETSCREW 

OIL-IMPREGNATED BOST-BRONZ—Recommended for high torque loads, particularly at slower speeds. 

OIL-RESISTANT SYNTHETIC RUBBER—Recommended where quietness is desired, particularly at motor speeds. 

POLYURETHANE—Recommended where moderate to heavy shock loads are encountered. 

LOAD DATA 

Coup- Shaft 

HORSEPOWER AND TORQUE RATING AT 

RECOMMENDED SPEEDS FOR INSERTS INDICATED 

Maximum Horsepower Rating at RPM of * Max. 

ling Diameter Torque 

Size Range 50 100 300 690 870 1150 1750 3450 (Lb. Ins.) 

XFCBB BOST-BRONZ INSERTS 

FC12 3/8–5/8 .16 .32 .95 2.2 2.8 3.6 5.6 — 200 

FC15 1/2–7/8 .40 .79 2.4 5.5 6.9 9.1 13.9 — 500 

FC20 1/2–1-1/8 .79 1.6 4.8 10.9 13.8 18.2 — — 1000 

FC25 3/4–1-3/8 1.4 2.9 8.6 19.7 24.8 — — — 1800 

FC30 1–1-5/8 2.5 5.1 15.2 35.0 — — — — 3200 

FC38 1-1/4–1-7/8 5.6 11.1 33.3 — — — — — 7000 

FC45 1-3/4-–2-1/8 8.7 17.5 — — — — — — 11000 

XFCR RUBBER INSERTS 

FC12 3/8–5/8 — .10 .31 .71 .90 1.2 1.8 3.6 65 

FC15 1/2–7/8 — .20 .60 1.4 1.7 2.3 3.5 6.8 125 

FC20 1/2–1-1/8 — .40 1.2 2.7 3.5 4.6 6.9 13.7 250 

FC25 3/4–1-3/8 — .71 2.1 4.9 6.2 8.2 12.5 24.6 450 

FC30 1–1-5/8 — 1.3 3.8 8.8 11.0 14.6 22.2 43.8 800 

FC38 1-1/4–1-7/8 — 2.5 7.6 17.5 22.1 29.2 44.4 — 1600 

FC45 1-3/4–2-1/8 — 4.4 13.3 30.7 38.7 51.1 77.7 — 2800 

XFCA POLYURETHANE INSERTS 

FC12 3/8–5/8 .09 .19 .56 1.2 1.6 2.0 3.0 5.7 125 

FC15 1/2–7/8 .18 .37 1.1 2.5 3.1 4.0 6.0 11.3 250 

FC20 1/2–1-1/8 .35 .70 2.1 4.6 5.7 7.5 11.1 20.7 470 

FC25 3/4–1-3/8 .62 1.2 3.7 8.1 10.1 13.1 19.3 35.8 845 

FC30 1–1-5/8 1.1 2.2 6.5 14.4 17.9 23.3 34.3 63.6 1500 

FC38 1-1/4–1-7/8 2.2 4.3 12.9 28.4 35.3 45.8 67.3 — 3000 

FC45 1-3/4–2-1/8 3.7 7.5 22.4 49.2 61.0 79.0 115.9 — 5250 

*For Uniform Load. 

SELECTION PROCEDURE 

1. From Table select Service Factor. 

2. Determine Design Load 

Design HP = Application HP x S.F. 

or 

Design Torque = Application Torque x S.F. 

3. Select coupling size from Load Rating 

Table which has a rating equal to or 

greater than the design load. 

COUPLING SERVICE FACTORS 

Load Service 

Classification Factor 

Uniform 1.00 

Moderate Shock 1.75 

Heavy Shock 2.50 

HP = 

T x RPM 

63,025

INSERT (3-JAW) TYPE FC SERIES 

BORED AND SOLID HUBS 

KEYWAY 

O.D. 

BORE 

LENGTH 

OVERALL 

LENGTH 

SETSCREW 

BORE 

HUB 

PROJ. 

HUB 

DIA. 

ALL DIMENSIONS IN INCHES 

ORDER BY CATALOG NUMBER OR ITEM CODE 

To order complete coupling order two coupling halves and one coupling insert. 

STANDARD TOLERANCES 

DIMENSION TOLERANCE 

BORE All +.001 –.000 

Over- Assem- Coupling Coupling Inserts 

Coup- Bore all Hub bly Halves Bost-Bronz Rubber Polyurethane 

ling Length + Length Clear- Catalog Item Catalog Item Catalog Item Catalog Item 

Size Bore O.D. ++ Dia. Proj. ance † Number Code Number Code Number Code Number Code 

— — FC12 SOLID 47448 

3/8 FC12–3/8 08246 

FC12 7/16 .94 1.25 2.32 1.00 .62 3.19 FC12–7/16 08248 XFCBB12 08064 XFCR12 08078 XFCA12 08050 

1/2 FC12–1/2 08250 

5/8 FC12-5/8 52405 

— — FC15 SOLID 47449 

1/2 FC15–1/2 08252 

FC15 

9/16 

5/8 

1.13 1.50 2.76 1.25 .75 3.75 

FC15–9/16 

FC15–5/8 

61421 XFCBB15 08066 

08254 

XFCR15 08080 XFCA15 08052 

3/4 FC15–3/4 08256 

7/8 FC15–7/8 61422 

— — FC20 SOLID 47450 

1/2 FC20–1/2 08258 

9/16 FC20–9/16 66063 

5/8 FC20–5/8 08260 

FC20 3/4 1.57 2.00 3.69 1.75 1.12 4.81 FC20–3/4 08262 XFCBB20 08068 XFCR20 08082 XFCA20 08054 

7/8 FC20–7/8 08264 

15/16 FC20–15/16 08266 

1 FC20–1 08268 

1-1/8 FC20-1-1/8 52406 

— — FC25 SOLID 47451 

3/4 FC25–3/4 08270 

7/8 FC25–7/8 08272 

FC25 

1 

1-1/8 

1.76 2.50 4.13 2.25 1.25 5.38 

FC25–1 

FC25–1-1/8 

08274 

XFCBB25 08070 

08276 

XFCR25 08084 XFCA25 08056 

1-3/16 FC25–1-3/16 08278 

1-1/4 FC25–1-1/4 08280 

1-3/8 FC25-1-3/8 52408 

— — FC30 SOLID 47452 

1 FC30–1 08282 

1-1/8 FC30–1-1/8 08284 

FC30 

1-1/4 

1-3/8 

2.35 3.00 5.48 2.75 1.69 7.00 

FC30–1-1/4 

FC30–1-3/8 

08286 

XFCBB30 08072 

08288 

XFCR30 08086 XFCA30 08058 

1-7/16 FC30–1-7/16 08290 

1-1/2 FC30–1-1/2 08292 

1-5/8 FC30-1-5/8 52409 

— — FC38 SOLID 24650 

1-1/4 FC38–1-1/4 08294 

1-1/2 FC38–1-1/2 08296 

FC38 1-9/16 

1-5/8 

2.69 

3.75 6.32 3.50 1.88 8.19 FC38–1-9/16 08298 XFCBB38 08074 

FC38–1-5/8 08300 

XFCR38 08088 XFCA38 08060 

1-3/4 FC38–1-3/4 08302 

1-7/8 FC38–1-7/8 08304 

— — FC45 SOLID 24816 

1-3/4 FC45–1-3/4 08306 

FC45 1-7/8 

2 

3.07 

4.50 7.19 4.00 2.12 9.31 FC45–1-7/8 

FC45–2 

08308 XFCBB45 08076 

08310 

XFCR45 08090 XFCA45 08062 

2-1/8 FC45–2-1/8 08312 

+Length of hole in each half. 

++Total length of coupling with jaws engaged full depth. 

†Total length of coupling with jaws completely disengaged for insert assembly. 


REFERENCE PAGES 

Alignment—148 

Keyways and Setscrews—150 


®

SPIDER RING (3-JAW) TYPE BF SERIES 

BOST-FLEX ® 



BORE All +.001 –.000 




SELECTION PROCEDURE 

For Service Factors and Procedure, refer to 

FC Couplings (Page 92). 


® 


ECONOMICAL 3-JAW COUPLING 

SPIDER RING URETHANE INSERTS absorb shock and vibration. 

Provides thru-bore opening for close coupling of shafts. 



O.D. 

OVERALL 

LENGTH 

E F 

KEYWAY 

BORE 

SETSCREW 

Coup- 

Bore 



(Includes two coupling halves and one coupling insert.) 

Approx. 

Coupling 

Replacement 

Insert 

ling Hub Overall Assem. Weight Catalog Item Item 

Size A B Dia. O.D. Length E F Clear. (Oz.) Number Code Code 

BF7 

3/8 

3/8 

1/2 .88 1.22 1.35 .50 .34 1.66 2 

BF7 3/8–3/8 

BF7 3/8–1/2 

11730 

11734 11722 

1/2 1/2 BF7 1/2–1/2 11732 

1/2 BF10 1/2–1/2 11736 

1/2 5/8 BF10 1/2–5/8 11742 

BF10 

5/8 

3/4 

5/8 

3/4 

1.26 1.59 1.97 .75 .46 2.41 6.5 BF10 1/2–3/4 

BF10 5/8–5/8 

BF10 5/8–3/4 

11744 

11738 

11746 

11724 

3/4 3/4 BF10 3/4–3/4 11740 

3/4 BF13 3/4–3/4 11748 

3/4 7/8 BF13 3/4–7/8 11754 

BF13 

7/8 

1 

7/8 

1 

1.62 1.97 2.47 .94 .59 3.00 14 BF13 3/4–1 

BF13 7/8–7/8 

BF13 7/8–1 

11756 

11750 

11758 

11726 

1 1 BF13 1–1 11752 

1 BF18 1–1 11760 

1 1-1/8 BF18 1–1-1/8 11766 

BF18 

1-1/8 

1-1/4 

1-1/8 

1-1/4 

2.25 2.72 2.97 1.13 .71 3.66 37 BF18 1–1-1/4 

BF18 1-1/8–1-1/8 

BF18 1-1/8–1-1/4 

11768 

11762 

11770 

11728 

1-1/4 1-1/4 BF18 1-1/4–1-1/4 11764 

HUB 

DIA. 



Maximum Horsepower Rating at RPM of * Max 

Torque 

Size 100 300 690 870 1150 1750 3450 (Lb. Ins.) 

BF 7 .044 .13 .31 .39 .51 .78 1.5 28 

BF 10 .11 .34 .78 1.00 1.30 2.00 3.9 72 

BF 13 .25 .76 1.70 2.20 2.90 4.40 8.8 160 

BF 18 .48 1.40 3.30 4.10 5.50 8.30 16.4 300 

*For uniform load.

SHEAR TYPE BG SERIES 

O.D. 

BORE 

A 



1/8–3/8 +.001 –.000 

BORE 1/2–5/8 +.0015 –.000 

3/4–1 +.002 –.000 



LOAD DATA 

OVERALL 

LENGTH 

F 

SETSCREW 

BORE 

B 


HUB 

DIA. 



Maximum Horsepower Rating at RPM of * Max 

Torque 

Size 100 300 690 870 1150 1750 3450 (Lb. Ins.) 

BG-47 .001 .003 .008 .010 .013 .020 .039 .72 

BG11-1 .004 .011 .025 .031 .041 .062 .123 2.25 

BG11-2 .007 .021 .049 .062 .082 .125 .246 4.50 

BG11-3 .014 .043 .099 .124 .164 .250 .493 9.00 

BG11-4 .019 .057 .131 .166 .219 .333 .657 12.00 

BG11-5 .029 .086 .197 .248 .328 .500 .985 18.00 

BG11-6 .043 .129 .296 .313 .493 .750 1.478 27.00 

BG11-7 .057 .171 .394 .497 .657 1.000 1.971 36.00 

*For uniform load. 

METAL HUBS JOINED BY PERMANENTLY BONDED ELASTOMER 

require no lubrication. Flexible in any direction—accommodates 

misalignment up to 1/32" parallel, 2° angular. 

HIGH TORSIONAL DEFLECTION isolates low frequency vibration. 

BORE SIZES FROM 1/8" TO 1" 

COMPLETE WITH STANDARD SETSCREWS (Not installed). 



Coupling Bore Hub Overall Catalog Item 

Size A B Dia. O.D. Length F * Number Code 

1/8 BG47-2-2 49887 

1/8 3/16 BG47-2-3 49888 

BG47 

3/16 

1/4 

3/16 

1/4 

7/16 9/16 13/16 3/16 

BG47-2-4 

BG47-3-3 

BG47-3-4 

49889 

49890 

49891 

1/4 1/4 BG47-4-4 49892 

3/16 

3/16 

1/4 

BG11-1-3-3 

BG11-1-3-4 

49893 

49894 

BG11-1 

1/4 

1/4 

5/16 

5/8 13/16 1-3/8 11/32 BG11-1-4-4 

BG11-1-4-5 

49895 

49896 

5/16 5/16 BG11-1-5-5 49897 

1/4 BG11-2-4-4 49898 

1/4 5/16 BG11-2-4-5 49899 

BG11-2 

5/16 

3/8 

5/16 

3/8 

3/4 1 1-3/4 13/32 

BG11-2-4-6 

BG11-2-5-5 

BG11-2-5-6 

49900 

49901 

49902 

3/8 3/8 BG11-2-6-6 49903 

5/16 BG11-3-5-5 49904 

5/16 3/8 BG11-3-5-6 49905 

BG11-3 

3/8 

1/2 

3/8 

1/2 

7/8 1-1/4 2-1/8 15/32 

BG11-3-5-8 

BG11-3-6-6 

BG11-3-6-8 

49906 

49907 

49908 

1/2 1/2 BG11-3-8-8 49909 

3/8 BG11-4-6-6 49910 

3/8 1/2 BG11-4-6-8 49911 

BG11-4 

1/2 

5/8 

1/2 

5/8 

1 1-3/8 2-1/4 17/32 

BG11-4-6-10 

BG11-4-8-8 

BG11-4-8-10 

49912 

49913 

49914 

5/8 5/8 BG11-4-10-10 49915 

1/2 BG11-5-8-8 49916 

1/2 5/8 BG11-5-8-10 49917 

BG11-5 3/4 1-1/8 1-5/8 2-1/2 19/32 BG11-5-8-12 49918 

5/8 5/8 BG11-5-10-10 49919 

3/4 3/4 BG11-5-12-12 49920 

1/2 

1/2 

3/4 

BG11-6-8-8 

BG11-6-8-12 

49921 

49922 

BG11-6 

5/8 

5/8 

3/4 

1-3/8 1-13/16 2-11/16 11/16 BG11-6-10-10 

BG11-6-10-12 

49923 

49924 

3/4 3/4 BG11-6-12-12 49925 

1/2 3/4 BG11-7-8-12 49926 

5/8 5/8 BG11-7-10-10 49927 

BG11-7 

3/4 

3/4 

7/8 

1-1/2 2 2-7/8 3/4 BG11-7-12-12 

BG11-7-12-14 

49929 

49930 

1 1 BG11-7-16-16 49931 

*Shafts should not extend into “F” dimension. 


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CLAMPING TYPE SCC SERIES 

OUTSIDE 

DIA. 

BORE 

(A) 

CLAMP SCREW 

LENGTH 



BORE All +.003 – +.000 

BORE (B) 

LOAD DATA 

Capacity is based on a standard steel, onepiece 

coupling mounted with recommended 

screw torque on a dry shaft. Capacities 

shown are for general guidance only. In 

appl ications involving control of torque 

loads, capacity should be determined 

experi mentally on actual parts involved. 

LOW CARBON STEEL COUPLINGS with a black oxide finish. 

BORE SIZES FROM 1/4” TO 2” 



Bore Clamp Catalog Item 

A B O.D. Length Screws (4) Number Code 

1/4 1/4 13/16 1-1/4 4-40 SCC1/4x1/4 49289 

3/8 

1/4 

3/8 

1-1/16 1-5/8 6-32 

SCC3/8x1/4 

SCC3/8x3/8 

49290 

49291 

1/2 

3/8 

1/2 

1-1/4 1-7/8 8-32 

SCC1/2x3/8 

SCC1/2x1/2 

49292 

49293 

5/8 

1/2 

5/8 

1-1/2 2-1/4 10-32 

SCC5/8x1/2 

SCC5/8x5/8 

49294 

49295 

1/2 SCC3/4x1/2 49296 

3/4 5/8 1-3/4 2-5/8 1/4-28 SCC3/4x5/8 49297 

3/4 SCC3/4x3/4 49298 

7/8 

5/8 

7/8 

1-7/8 2-7/8 1/4-28 

SCC7/8x5/8 

SCC7/8x7/8 

49299 

49300 

1 1 2 3 1/4-28 SCC1x1 49302 

1-1/8 

1 

1-1/8 

2-1/8 3-1/4 1/4-28 

SCC1-1/8x1 

SCC1-1/8x1-1/8 

49303 

49304 

1-1/4 

1 

1-1/4 

2-1/4 3-3/8 1/4-28 

SCC1-1/4x1 

SCC1-1/4x1-1/4 

49305 

49306 

1-3/8 

1 

1-3/8 

2-3/8 3-5/8 1/4-28 

SCC1-3/8x1 

SCC1-3/8x1-3/8 

49307 

49308 

1-1/2 

1 

1-1/2 

2-1/2 3-3/4 1/4-28 

SCC1-1/2x1 

SCC1-1/2x1-1/2 

49309 

49310 

1-3/4 1-3/4 3 4-1/2 5/16-24 SCC1-3/4x1-3/4 49312 

2 2 3-1/4 4-7/8 5/16-24 SCC2x2 49314 

TORQUE CAPACITY 

Torque Recommended 

Capacity Screw Screw Torque 

Bore (Lb. Ins.) Size (Lb. Ins.) 

1/4 72 4-40 20 

3/8 192 6-32 30 

1/2 480 8-32 55 

5/8 1200 10-32 90 

3/4 1500 

7/8 1680 

1 1920 

1-1/8 2200 1/4-28 90 

1-1/4 3000 

1-3/8 3500 

1-1/2 4000 

1-3/4 

2 

5400 

6000 

5/16-24 435

MULTI-JAW TYPE FA SERIES 



BORE All ±.0005 




UNTREATED STEEL COUPLINGS for use in light duty applications, 

require no lubrication. 

BORE SIZES FROM 3/16" TO 1/2" 

COMPLETE WITH STANDARD SETSCREWS 

O.D. 

BORE 

LENGTH 

OVERALL 

LENGTH 



SETSCREW 

BORE 

HUB 

PROJ. 

Steel 

Coupling Bore Assembly Hub Catalog Item 

Size Bore O.D. Length † Length ++ Clearance ‡ Dia. Proj. Teeth Number Code 

3/16 FA5 3/16–3/16 07900 

FA5 7/32 1/2 1-1/8 .48 .48 7/16 7/16 10 FA5 7/32–7/32 07902 

1/4 FA5 1/4–1/4 07904 

FA75 5/16 

3/8 

3/4 1-1/2 5/8 1-3/4 11/16 33/64 10 

FA75 5/16–5/16 

FA75 3/8–3/8 

07910 

07912 

FA10 

7/16 

1/2 

1 2 .86 .86 15/16 3/4 12 

FA10 7/16–7/16 

FA10 1/2–1/2 

07908 

07906 

†Total length of coupling with jaws engaged full depth. 

++Length of hole in each half. 

‡Approximate total length of coupling with jaws completely disengaged. 

RIGID (ONE PIECE) TYPE CR SERIES 



O.D. 

SETSCREW 

A 

BORE 

OVERALL 

LENGTH 

A 




HUB 

DIA. 



Overall Catalog Item 

Bore O.D. Length A Setscrew Number Code 

1/4 .48 3/4 3/16 #6-32 CR4 34200 

5/16 .60 1 1/4 #10-32 CR5 34202 

3/8 .72 1 1/4 #10-32 CR6 34204 

1/2 .97 1-1/2 3/8 1/4-20 CR8 34206 

5/8 1.21 2 1/2 1/4-20 CR10 34208 

3/4 1.47 2 1/2 3/8-16 CR12 34210 

7/8 1.72 2 1/2 3/8-16 CR14 34212 

1 1.96 3 3/4 3/8-16 CR16 34214 

1-1/4 2.21 4 1 1/2-13 CR20 34216 



BORE All +.001 –.000 


®

HORSEPOWER RATINGS (Maximum) AT 1750 RPM 

Size Horsepower 

FCP21 1/20 

FCP23 1/2 


® 


SLEEVE TYPE FCP SERIES 

MATERIALS 

Urethane Sleeves 

Delrin Hubs 

Aluminum Alloy Inserts 



BORE All +.001 –.000 



SPLINED HUBS AND URETHANE SLEEVE accommodate 

misalignment to 5°. 

SLEEVE STOCK available for producing special lengths. 

NO LUBRICATION NEEDED 

COMPLETE WITH SETSCREWS 

A 

2 

O.D. 

A 

L 

E 

1 

16 

HUB 

SETSCREW 

BORE 

H 

INSERT 



Complete Coupling Insert and Hub Assembly Sleeve Only 

Catalog Item Catalog Item Catalog Item 

Bore O.D. A E H L Setscrew Number Code Number Code Number Code 

.125 4-40 FCP21-1/8 54893 XFCP21-1/8 54903 

.1875 

.250 

37/64 7/32 7/16 9/16 15/16 

6-32 

FCP21-3/16 

FCP21-1/4 

54894 

54895 

XFCP21-3/16 

XFCP21-1/4 

54904 

54905 

X5R21-16 54913 

.3125 8-32 FCP23-5/16 54899 XFCP23-5/16 54909 

.375 

.4375 

.500 

1-5/64 3/8 11/16 1 1-9/16 10-32 

1/4-20 

FCP23-3/8 

FCP23-7/16 

FCP23-1/2 

54900 

54901 

54902 

XFCP23-3/8 

XFCP23-7/16 

XFCP23-1/2 

54910 

54911 

54912 

X5R23-32 54915 

LOAD DATA SLEEVE STOCK 


O.D. Length (Inches) Catalog Number Item Code 

1/2 10 5R21-16S 54916 

1 12 5R23-32S 54918

PIN AND BLOCK TYPE 

UNIVERSAL JOINTS 

GENERAL DESCRIPTION / SELECTION PROCEDURE ............................................................ 100 

STEEL & STAINLESS STEEL— BORED & SOLID HUBS............................................................101 

BOOT KITS ......................................................................................................................................101 

FORGED TYPE 

GENERAL DESCRIPTION / SELECTION PROCEDURE ..............................................................102 

STEEL — COMPLETE JOINTS.......................................................................................................103 

YOKES & CENTER KITS.................................................................................................................104 

MOLDED TYPE 


DELRIN — SINGLE & DOUBLE......................................................................................................105 

DELRIN — WITH SLIDE EXTENSION ............................................................................................106 

ENGINEERING INFORMATION...............................................................................................................148 


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® 


PIN AND BLOCK TYPE J/JS SERIES 

STEEL AND STAINLESS STEEL 

SELECTION 

Torque ratings may be calculated from data in tables. The 

tables indicate the Rated Static Torque (Lb. Ins.) of alloy and 

stainless steel joints and Speed-Angle factors suggested for 

various operating conditions. 

The approximate service torque rating of a particular joint is 

obtained by dividing the Rated Static Torque by the appropriate 

Speed-Angle factor. 

Selecting a universal joint to satisfy a specified torque requirement 

is also made convenient with the data provided. 

The designated torque load should be multiplied by the 

appropriate Speed-Angle factor to obtain an equivalent static 

torque load. 

A universal joint with a rated static torque equal to or greater 

than the calculated torque load would then be selected. 

Boston Gear precision machined J and JS Series Universal Joints are designed 

for connecting shafts at angles up to 30 degrees and speeds up to 2000 RPM. 

All sizes are stocked with both solid and bored hubs. 

Joints J100 and J100B and larger are equipped with self-closing, ball valve oilers, 

creating an oil reservoir to provide enclosed lubrication. 

The self-locking assembly ring on joints with 7/8" and larger hub diameter, fits 

into recess provided in center bearing block and snaps around groove in small 

bearing pin—assuring locking of entire assembly—allowing for quick and easy 

disassembly and reassembly. Joints with 3/4" and smaller hub diameters are 

locked by riveting the small bearing pin. 

Joint covers (boots) keep dirt and moisture out and lubricants in. 

SPEED ANGLE FACTORS 

EXAMPLE: 

A pair of universal joints are desired to transmit 1/2 HP from 

one shaft running at 500 RPM to another located at an angle 

of 10 degrees (from a straight line). 

The joints will be connected by an intermediate shaft and 

arranged to operate at equal angles of 5 degrees. 

A Speed-Angle factor of 9 is indicated in the table for an operating 

angle of 5 degrees and a speed of 500 RPM. 

Torque 63025 Load = x HP 63025 x = 1/2 

= 63 Lb. Ins. 

RPM 

500 

Equivalent Static Load = Torque load x Factor 

= 63 x 9 = 567 Lb. Ins. 

J100 size alloy steel or JS175 size stainless steel universals 

would be suggested for this application. 

Speed Operating Angle — Degrees (Deviation from Straight Line) 

in RPM 0 1/2 1 2 3 4 5 6 8 10 12 15 20 25 30 

2000 21 22 23.2 25.2 27.4 29.4 31.6 — — — — — — — — 

1800 19 20 21.0 22.8 24.8 26.6 28.6 30.4 — — — — — — — 

1600 17 17.8 18.8 20.4 22.2 23.8 25.6 27.2 — — — — — — — 

1400 15 15.8 16.6 18.0 19.6 21.0 22.6 24.0 27 — — — — — — 

1200 13 13.6 14.4 15.6 17.0 18.2 19.6 20.8 23.4 — — — — — — 

1000 11 11.6 12.2 13.2 14.4 15.4 16.6 17.6 19.8 22 — — — — — 

900 10 10.6 11.0 12.0 13.0 14.0 15.0 16.0 18.0 20 22 — — — — 

800 9.0 9.4 10.0 10.8 11.8 12.6 13.6 14.4 16.2 18 19.8 — — — — 

700 8.0 8.4 8.8 9.6 10.4 11.2 12.0 12.8 14.4 16 17.6 20 — — — 

600 7.0 7.4 7.8 8.4 9.2 9.8 10.6 11.2 12.6 14 15.4 17.6 — — — 

500 6.0 6.4 6.6 7.2 7.8 8.4 9.0 9.6 10.8 12 13.2 15.0 18 — — 

400 5.0 5.2 5.6 6.0 6.6 7.0 7.6 8.0 9.0 10 11.0 12.6 15 17.6 — 

300 4.0 4.2 4.4 4.8 5.2 5.6 6.0 6.4 7.2 8.0 8.8 10.0 12 14.0 16 

200 3.0 3.2 3.4 3.6 4.0 4.2 4.6 4.8 5.4 6.0 6.6 7.6 9.0 10.6 12 

100 2.0 2.2 2.2 2.4 2.6 2.8 3.0 3.2 3.6 4.0 4.4 5.0 6.0 7.0 8.0 

50 1.5 1.6 1.7 1.8 2.0 2.2 2.2 2.4 2.8 3.0 3.4 3.8 4.6 5.2 6.0 

25 1.3 1.3 1.4 1.5 1.6 1.8 1.9 2.0 2.2 2.6 2.8 3.2 3.8 4.4 5.0 

10 1.1 1.2 1.2 1.3 1.4 1.5 1.7 1.8 2.0 2.2 2.4 2.8 3.4 3.8 4.4 

0 1.0 1.1 1.1 1.2 1.3 1.4 1.5 1.6 1.8 2.0 2.2 2.6 3.0 3.6 4.0 

RATED STATIC TORQUE (LB. INS.) STRAIGHT LINE 

ALLOY STEEL UNIVERSAL JOINTS 

Catalog Number J37 J50 J62 J75 J87 J100 J112 J125 J150 J175 J200 J250 J300 J400 

Torque — Lb. Ins. 20 80 166 320 370 600 670 1040 1680 2500 4400 7000 11,000 26,400 

STAINLESS STEEL UNIVERSAL JOINTS 

Catalog Number JS37 JS50 JS62 JS75 JS87 JS100 JS112 JS125 JS150 JS175 JS200 JS250 JS300 JS400 

Torque — Lb. Ins. 6 24 50 96 110 180 200 310 500 750 1320 1900 3100 7360

PIN AND BLOCK TYPE J/JS SERIES 

STEEL AND STAINLESS STEEL BORED AND SOLID HUBS 


Dimensions Tolerance 

Steel Stainless 

Bore All ± .001 ±.001 

Hub Dia. All + .000 – .003 ±.020 

Bore Length All ±1/16 ±1/64 

Overall Length 


1-3/4 - 4-1/4 ±1/64 ±1/64 

5 - 10-5/8 ±1/32 ±1/32 


OVERALL LENGTH 

OVERALL 

LENGTH 

2 

BORE 

LENGTH 

OVERALL 

LENGTH 

2 

A 

C B C 

Boot Kit 

Lubrication—148 

Mounting—148 

Universal Joints Boot Kits † 

Catalog Item Catalog Item Bore** Bore* Hub Overall Keyway Setscrew Approx. Catalog † ALL DIMENSIONS IN INCHES 


STEEL STAINLESS 

Number Code 

STEEL 

Number Code Length Dia. Length 

Weight 

Lbs. 

A B C 

Item 

Number Code 

J37A-3/16 72467 - - - 2-56NC .04 

J37B 08426 JS37B 08472 3/16 11/16 3/8 1-3/4 - - .04 1-1/32 1-1/32 9/32 UB37 47602 

J37 08400 JS37 08452 - - .05 

J50A-1/4 72468 - - - 4-40NC .08 

J50B 08428 JS50B 08474 1/4 3/4 1/2 2 - - .08 1-1/4 1-5/16 11/32 UB50 47603 

J50 08402 JS50 08454 - - .10 

J62A-5/16 72469 - - 3/32x3/64 10-32NF .14 

J62B 08430 JS62B 08476 5/16 13/16 5/8 2-1/4 - - .14 1-1/2 1-7/16 13/16 UB62 47604 

J62 08404 JS62 08456 - - .18 

J75A-3/8 72470 - - 3/32x3/64 10-32NF .24 

J75B 08432 JS75B 08478 3/8 31/32 3/4 2-11/16 - - .24 1-3/4 1-9/16 9/16 UB75 47605 

J75 08406 JS75 08458 - - .30 

J87A-7/16 72471 -- 3/32x3/64 10-32NF .31 

J87B 08434 JS87B 08480 7/16 1-1/32 7/8 3 - - .31 2 1-13/16 19/32 UB87 47606 

J87 08408 JS87 08460 - - .45 

J100A-1/2 72472 - - 1/8x1/16 1/4-20NC .50 

J100B 08436 JS100B 08482 1/2 1-3/16 1 3-3/8 - - .50 2-1/4 2-1/8 5/8 UB100 47607 

J100 08410 JS100 08462 - - .66 

J112A-9/16 72473 - - 1/8x1/16 1/4-20NC .69 

J112B 72474 JS112B 72483 9/16 1-7/32 1-1/8 3-1/2 - - .69 2-9/16 2-7/16 17/32 UB112 72491 

J112 72475 JS112 72484 - - .88 

J125A-5/8 72476 -- 3/16x3/32 5/16-18NC .88 

J125B 08438 JS125B 08484 5/8 1-1/4 1-1/4 3-3/4 - - .88 2-7/8 2-3/4 1/2 UB125 47608 

J125 08412 JS125 08464 - - 1.15 

J150A-3/4 72477 - - 3/16x3/32 5/16-18NC 1.44 

J150B 08440 JS150B 08486 3/4 1-11/32 1-1/2 4-1/4 - - 1.44 3-1/4 3-1/4 1/2 UB150 47609 

J150 08414 JS150 08466 - - 1.81 

J175A-7/8 72478 - - 3/16x3/32 5/16-18NC 2.31 

J175B 08442 JS175B 08488 7/8 1-9/16 1-3/4 5 - - 2.31 3-5/8 3-3/4 5/8 UB175 47610 

J175 08416 JS175 08468 - - 2.86 

J200A-1 72479 - - 1/4x1/8 3/8-16NC 3.31 

J200B 08444 JS200B 08490 1 1-5/8 2 5-7/16 - - 3.31 4-1/2 4-3/16 5/8 UB200 47611 

J200 08418 JS200 08470 - - 4.06 

J250A-1-1/4 72480 - - 1/4x1/8 3/8-16NC 6.81 

J250B 08446 JS250B 72485 1-1/4 2-3/32 2-1/2 7 - - 6.81 5-1/2 4-7/8 1-1/16 UB250 47612 

J250 08420 JS250 72486 - - 8.25 

J300A-1/1/2 72481 - - 3/8x3/16 1/2-13NC 12.5 

J300B 08448 JS300B 72487 1-1/2 2-27/32 3 9 - - 12.5 6 5-5/8 1-11/16 UB300 47613 

J300 08422 JS300 72488 - - 15.25 

J400A-2 72482 - - 1/2x1/4 1/2-13NC 25.8 

J400B 08450 JS400B 72489 2 3-1/8 4 10-5/8 - - 25.8 6-7/8 6-5/8 2 UB400 47614 

J400 08424 JS400 72490 - - 31.3 

*Approximate Hub Projection 

†Each Kit contains (2) Boots and (4) Ties together with complete instructions for installation and lubrication. 

**Style A includes bore, keyway and setscrew. Style B includes bore only 

HUB 

DIA. 

BORE DIA. 


®


® 


FORGED/CAST UJNS/UJNL SERIES 

STEEL BOS-TRONG ® 

SELECTION 

LOAD DATA 

A BOS-trong ® joint is composed of two yokes and a center kit. BOS-trong joints 

may be purchased assembled, or as separate yokes and center kits. Individually 

boxed. 

AVAILABLE IN TWO SIZES 

EQUIPPED WITH NEEDLE BEARINGS 

PRECISION MACHINED FOR LONG, SMOOTH OPERATION 

CONTINUOUS OR INTERMITTENT SERVICE 

HIGH CAPACITY WITH MINIMUM SWING DIAMETER 

BROAD RANGE OF HOLE DIAMETERS 

AVAILABLE WITH ROUND, SQUARE OR HEXAGON HOLES 


REPLACEABLE CENTER KITS 

FITTING FOR LUBRICATION 

Universal Joints are used in many different types of applications and under a wide variety of operating conditions. 

No convenient method can be presented for determining ratings for all possible circumstances. 

Performance will be affected by vibration, shock loading, high temperature, dusty environment, etc. 

The simplest solution to this problem is to provide approximate ratings of universal joints operating at various 

angles and speeds under normal service conditions. 

The suggested ratings are for general use in applications where two joints are arranged at equal angles with the 

bearing pins of the intermediate yokes in line with each other. 

Service torque ratings of the two sizes of BOS-trong ® Needle Bearing universals are listed in tables. Ratings for 

intermediate speeds and/or angles not shown may be found by interpolation. 

APPROXIMATE TORQUE RATINGS (LB. INS.) 

UJNS Series UJNL Series 

Operating Angle *—Degrees (Deviation from Straight Line) Operating Angle †—Degrees (Deviation from Straight Line) 

Speed Up to Up to 

RPM 3° 5° 8° 12° 20° 30° 3° 5° 8° 12° 20° 30° 

1800 610 515 440 — — — 845 710 610 — — — 

1200 700 590 505 435 — — 965 815 695 600 — — 

900 770 650 555 480 365 — 1060 895 765 660 500 — 

600 880 740 635 545 415 260 1210 1020 875 755 575 355 

300 1110 935 800 690 525 325 1530 1290 1100 950 725 450 

200 1270 1070 915 790 600 370 1750 1480 1260 1090 825 515 

100 1600 1350 1150 995 755 470 2210 1860 1590 1370 1040 645 

50 2020 1700 1450 1250 950 590 2780 2350 2000 1730 1310 815 

25 2540 2140 1830 1580 1200 745 3500 2960 2530 2180 1650 1020 

10 3450 2900 2480 2140 1630 1010 4760 4010 3430 2960 2250 1390 

Non Operating Flex angle—90° 

*Maximum Angles (Momentary)—45° 

†Maximum Angles (Momentary)—35°

FORGED/CAST UJNS/UJNL SERIES 

STEEL BOS-TRONG ® 

OVERALL 

LENGTH 

SETSCREW 

BORE 

HUB 

DIA. 



BORE All +.002 –.000 


Mounting —148 

Lubrication — 148 

ORDERING INFORMATION 

KEYWAY 

Joints can also be ordered in various combinations 

of round, square or hex holes. To 

order the combination desired, specify 

“UJNS” or “UJNL” and hole size and type as 

listed in table of Yokes, Page 104. Use “S” 

for square and “H” for hexagon. 


All joints have round holes with standard keyways and 3/8–16 hex socket 

setscrews. 


Approx. 

Overall Bore Hub Dia. Weight Catalog Item 

Length Hub-A Hub-B Hub-A Hub-B (Lbs.) Number Code 

UJNS SERIES SWING DIAMETER—2-1/2" 

5/8 1-5/8 UJNS 10-10 17300 

3/4 1-5/8 UJNS 10-12 17302 

13/16 1-5/8 UJNS 10-13 17304 

5 5/8 7/8 1-5/8 1-5/8 2 UJNS 10-14 17306 

15/16 1-5/8 UJNS 10-15 17308 

1 1-5/8 UJNS 10-16 17310 

1-1/8 2-1/4 UJNS 10-18 17312 

3/4 1-5/8 UJNS 12-12 17314 

13/16 1-5/8 UJNS 12-13 17316 

5 3/4 7/8 1-5/8 1-5/8 2 UJNS 12-14 17318 

15/16 1-5/8 UJNS 12-15 17320 

1 1-5/8 UJNS 12-16 17322 

1-1/8 2-1/4 UJNS 12-18 17324 

13/16 1-5/8 UJNS 13-13 17326 

7/8 1-5/8 UJNS 13-14 17328 

5 13/16 15/16 1-5/8 1-5/8 2 UJNS 13-15 17330 

1 1-5/8 UJNS 13-16 17332 

1-1/8 2-1/4 UJNS 13-18 17334 

7/8 1-5/8 UJNS 14-14 17336 

5 7/8 

15/16 

1 

1-5/8 

1-5/8 

1-5/8 

2 

UJNS 14-15 

UJNS 14-16 

17338 

17340 

1-1/8 2-1/4 UJNS 14-18 17342 

15/16 1-5/8 UJNS 15-15 17344 

5 15/16 1 1-5/8 1-5/8 2 UJNS 15-16 17346 

1-1/8 2-1/4 UJNS 15-18 17348 

5 1 

1 

1-1/8 

1-5/8 

1-5/8 

2-1/4 

2 

UJNS 16-16 

UJNS 16-18 

17350 

17352 

5 1-1/8 1-1/8 2-1/4 2-1/4 3 UJNS 18-18 17498 

UJNL SERIES SWING DIAMETER—2-3/4" 

1 2 UJNL 16-16 17354 

1-1/8 2-1/4 UJNL 16-18 17356 

1-3/16 2-1/4 UJNL 16-19 17358 

5-1/2 1 1-1/4 2 2-1/4 3-3/4 UJNL 16-20 17360 

1-3/8 2-1/4 UJNL 16-22 17362 

1-7/16 2-1/4 UJNL 16-23 17364 

1-1/2 2-1/4 UJNL 16-24 17366 

1-1/8 2-1/4 UJNL 18-18 17368 

1-3/16 2-1/4 UJNL 18-19 17370 

5-1/2 1-1/8 

1-1/4 

1-3/8 

2-1/4 

2-1/4 

2-1/4 

3-3/4 

UJNL 18-20 

UJNL 18-22 

17372 

17374 

1-7/16 2-1/4 UJNL 18-23 17376 

1-1/2 2-1/4 UJNL 18-24 17378 

1-3/16 2 UJNL 19-19 17380 

1-1/4 2-1/4 UJNL 19-20 17382 

5-1/2 1-3/16 1-3/8 2-1/4 2-1/4 3-1/4 UJNL 19-22 17384 

1-7/16 2-1/4 UJNL 19-23 17386 

1-1/2 2-1/4 UJNL 19-24 17388 

1-1/4 2 UJNL 20-20 17390 

5-1/2 1-1/4 

1-3/8 

1-7/16 

2-1/4 

2-1/4 

2-1/4 

3-1/4 

UJNL 20-22 

UJNL 20-23 

17392 

17394 

1-1/2 2-1/4 UJNL 20-24 17396 

1-3/8 2-1/4 UJNL 22-22 17398 

5-1/2 1-3/8 1-7/16 2-1/4 2-1/4 3-1/4 UJNL 22-23 17400 

1-1/2 2-1/4 UJNL 22-24 17402 

5-1/2 1-7/16 

1-7/16 

1-1/2 

2-1/4 2-1/4 3-1/4 

UJNL 23-23 

UJNL 23-24 

17404 

17406 

5-1/2 1-1/2 1-1/2 2-1/4 2-1/4 3-1/4 UJNL 24-24 17408 


®



Round +.000–+.002 

Bore Square 

3/4–13/16 +.000–+.002 

7/8 –1-1/2 +.001 +.003 

Hexagon +.002 +.004 


® 


FORGED/CAST UJS/UJL SERIES 

STEEL 

A 

Bore 

Hub 

Dia. 

Keyway 

YOKES 

These yokes are for assembly with UJSC Center Kits. 

All yokes are furnished with 3/8–16 hex socket setscrew. 

UJS14H is 1/8 NPT straight. 


A 

KEYWAY 

HUB 

BORE DIA. 

CENTER KITS DOUBLE YOKES 

DIM. 

ACROSS 

FLATS 


Center Kits * Double Yokes 

Approx. Maximum Approx. 

Weight Catalog Item Operating Weight Catalog Item 

A B C D (Lbs.) Number Code J Angle (Lbs.) Number Code 

UJS Series UJS Series Forged 

1-61/64 35/64 19/32 31/32 1/2 UJSC 17464 2-1/2 15° 1 UJSD 17460 

UJL Series UJL Series Forged – 2 piece Welded Construction 

2-5/16 .644 5/8 1-1/16 3/4 UJLC 17466 4-7/16 35° 2-1/4 UJLD 17462 

*Center Kits include 1 cross, 4 bearings, 4 cork washers and 4 lock rings. 

Round Bores Square Bores Hexagon Bores 

Setscrew 

Location 

Approx. 

Weight 

(Lbs.) 

Catalog 

Number 

Item 

Code 

Dim. 

Across 

Flats 

Hub 

Dia. 

Approx. 

Weight 

(Lbs.) 

Catalog 

Number 

Item 

Code 

Catalog 

Number 

UJS Series 

.625 

(4) 

UJS10 17410 — — — — — — — 

2-1/2 

.750 

.813 

.875 

1.63 

3/16x3/32 

(1) 

(4) 

(5) 

(4) 

3/4 

UJS12 

UJS13 

UJS14 

17412 

17414 

17416 

.750 

.813 

.875 (7) 

1.63 

3/4 

UJS12S 

UJS13S 

UJS14S 

17438 

17440 

17442 

— 

— 

UJS14H (7) 

— 

— 

17454 

.938 

1.000 

1/4x1/8 

(1) 

(4) 

(4) 

UJS15 

UJS16 

17418 

17420 

.938 

1.000(7) 

2.25 

1-1/4 

UJS15S 

UJS16S 

17444 

17446 

— 

— 

— 

— 

1.125 2.25 (2) (4) 1-1/4 UJS18 17422 1.126 UJS18S 17448 UJS18H 17456 

UJL Series 

1.000 2.00 1/4x1/8 (3) (4) 1-1/2 UJL16 17424 1.000 2.00 1-1/2 UJL16S 17450 — — 

1.125 

UJL18 17426 1.126 2.25 1-1/2 UJL18S 17452 UJL18H 17458 

1.1875 1/4x1/8 

UJL19 17428 (1) Two keyways 180° apart, 3/16x3/32 and 1/4x1/8 

2-3/4 1.250 

1.375 

2.25 

5/16x5/32 

(5) 

1-1/4 

UJL20 

UJL22 

17430 

17432 

(2) Two keyways 180° apart, 1/4x1/8 and 5/16x5/32 

(3) Located 90° from shown 

(4) Located as shown 

1.4375 

1.500 

3/8x3/16 

(4)(6) 

UJL23 

UJL24 

17434 

17436 

(5) Located 180° from shown 

(6) Additional setscrew over keyway 

(7) Has both .875 and 1.000 square bores @ 45° 

Item 

Code

MOLDED TYPE JP SERIES 

SINGLE AND DOUBLE 



BORE All +.001 –.000 


Mounting—148 

MATERIALS 

Delrin Body 

Nickel Plated Brass Spider and Insert 

MOLDED DELRIN BODY provides vibration dampening and electrical 

insulation. 

MAX. ANGULAR DISPLACEMENT—Single 45°, Double 90° 

MAX. AMBIENT TEMPERATURE—180°F 


C 

C 

O.D. 

O.D. 

BORE 

BORE 

(2) SETSCREWS 

EACH END (SEE NOTE) 

INSERT 

L 

BRASS 

SPIDER 

(2) SETSCREWS 

EACH END 

F 

L 

BRASS 

SPIDER 



DOUBLE ONLY 

Bore L 

Max. SINGLE DOUBLE 

Depth 

Parallel Catalog Item Catalog Item 

Bore (Typical) O.D. C Single Double F Offset Setscrew Number Code Number Code 

1/8 .39 1/4 .27 1-3/64 1-23/64 5/16 .22 #4-40 JP25-1/8 * 54194 JPD25-1/8 54202 

1/8 

.52 3/8 .41 1-31/64 2 17/32 .36 #4-40 

JP37-1/8 * 3/16 JP37-3/16 

54195 

54196 

JPD37-1/8 

JPD37-3/16 

54203 

54204 

3/16 

1/4 

.63 1/2 .54 1-13/16 2-7/16 5/8 .43 #6-32 

JP50-3/16 

JP50-1/4 

54197 

54198 

JPD50-3/16 

JPD50-1/4 

54205 

54206 

1/4 JP62-1/4 54199 JPD62-1/4 54207 

5/16 .86 5/8 .68 2-41/64 3-33/64 7/8 .61 #8-32 JP62-5/16 54200 JPD62-5/16 54208 

3/8 JP62-3/8 54201 JPD62-3/8 54209 

*One setscrew each end. 

LOAD DATA 

Maximum Torque † 

Basic (Lb. Ins.) 

Size Single Double 

25 5 2.5 

37 16 7 

50 26 12 

62 60 47 

†This is the ultimate or breaking torque for static, zero angle conditions. Actual 

operating conditions will dictate use of significantly lower values. 


SINGLE 

DOUBLE 


®


® 


MOLDED TYPE JPE SERIES 

WITH SLIDE EXTENSION 

A 

BORE 

(2) SETSCREWS 

EACH END 

(SEE NOTE) 

B 

C IN CLOSED POSITION 

G 

O.D. F H 

D 

K IN CLOSED POSITION 

MOLDED DELRIN BODY provides vibration dampening and electrical 

insulation. 

MAX. ANGULAR DISPLACEMENT—90° 

MAX. AMBIENT TEMPERATURE—180°F 

MAX. EXTENSION—3/4" 


J 

BRASS 

SPIDERS 



BORE All +.001 –.000 


Mounting —148 

MATERIALS 

Delrin Body 

Nickel Plated Brass Spider and Insert 



Bore 

Depth G Catalog Item 

Bore (Typical) O.D. A B C D E F (Sq.) H J K Setscrew Number Code 

1/8 

3/16 

.52 3/8 .41 .74 2-59/64 1-1/8 — 1-47/64 3/16 23/64 2-43/64 4-13/32 #4-40 

JPE37-1/8 

JPE37-3/16 

54210 

54211 

3/16 

1/4 

.63 1/2 .54 .91 2-23/64 1-1/8 3/8 1-34/64 3/16 23/64 2-9/16 4-11/64 #6-32 

JPE50-3/16 

JPE50-1/4 

54212 

54213 

LOAD DATA 

Basic 

Maximum Recommended 

Torque (Lb. Ins.) * 

Size Closed Open 

JPE37 8 5 

JPE50 14 10 

*This is the ultimate or breaking torque for static zero angle conditions. 

Actual operating conditions will dictate use of significantly lower values.

SETSCREW COLLARS 

SHAFT COLLARS 

STEEL & STAINLESS STEEL.........................................................................................................108 

CLAMPING COLLARS 


THREADED — STEEL & STAINLESS STEEL...............................................................................109 

1 PIECE — STEEL, STAINLESS STEEL & ALUMINUM ...............................................................110 

2 PIECE — STEEL & STAINLESS STEEL .....................................................................................111 

Gear Catalog 107



STEEL AND STAINLESS STEEL SC/SSC SERIES 

WIDTH 



BORE 

1/8-1/2 

9/16-2 

+.0005/ +.0025 

+.0005 /+.0030 

Over 2 +.0010/ +.0040 

MATERIAL 

SETSCREWS 

BORE OUTSIDE 

DIA. 

Stainless Steel—Type 303 Austenitic 

Steel—Low Carbon, Zinc Plated Finish 

STEEL BORE SIZES FROM 1/8" TO 3" 

STAINLESS STEEL BORE SIZES FROM 1/8" TO 2" 

STAINLESS STEEL COLLARS ARE CORROSION-RESISTANT AND 

NON-MAGNETIC suitable for temperatures up to 800°F. Ideal for applications 

requiring hygienic cleanliness. 

ALL COLLARS COMPLETE WITH STANDARD HOLLOW POINT 

SETSCREWS. 



Alloy Steel Stainless Steel 

Outside Catalog Item Catalog Item 

Bore Dia. Width Number Code Number Code 

-1/8 3/8 1/4 SC12 67697 SSC12 67740 

-3/16 7/16 1/4 SC18 67698 SSC18 67741 

-1/4 1/2 5/16 SC25 67699 SSC25 67742 

-5/16 5/8 5/16 SC31 67700 SSC31 67743 

-3/8 3/4 3/8 SC37 67701 SSC37 67744 

-7/16 7/8 7/16 SC43 67702 — — 

-1/2 

-9/16 

1 7/16 

SC50 

SC56 

67703 

67704 

SSC50 

— 

67745 

— 

-5/8 1-1/8 1/2 SC62 67705 SSC62 67746 

-11/16 

-3/4 

1-1/4 9/16 

SC68 

SC75 

67706 

67707 

— 

SSC75 

— 

67747 

-13/16 1-1/4 9/16 SC81 67708 — — 

-7/8 1-1/2 9/16 SC87 67709 SSC87 67748 

-15/16 

1 

1-1/2 

9/16 

5/8 

SC93 

SC100 

67710 

67711 

— 

SSC100 

— 

67749 

1-1/16 

1-1/8 

1-3/4 5/8 

SC106 

SC112 

67712 

67713 

— 

SSC112 

— 

67784 

1-3/16 

1-1/4 

2 11/16 

SC118 

SC125 

67714 

67715 

— 

SSC125 

— 

67785 

1-5/16 

1-3/8 

2-1/8 

11/16 

3/4 

SC131 

SC137 

67716 

67717 

— 

— 

— 

— 

1-7/16 

1-1/2 

2-1/4 3/4 

SC143 

SC150 

67718 

67719 

— 

SSC150 

— 

67788 

1-9/16 SC156 67720 — — 

1-5/8 2-1/2 13/16 SC162 67721 — — 

1-11/16 SC168 67722 — — 

1-3/4 SC175 67723 SSC175 67789 

1-13/16 2-5/8 7/8 SC181 67724 — — 

1-7/8 SC187 67725 — — 

1-15/16 SC193 67726 — — 

2 3 7/8 SC200 67727 SSC200 67790 

2-1/8 SC212 67728 — — 

2-3/16 SC218 67729 — — 

2-1/4 

2-5/16 

3-1/4 15/16 

SC225 

SC231 

67730 

67731 

— 

— 

— 

— 

2-3/8 SC237 67732 — — 

2-7/16 

2-1/2 

3-1/2 1 

SC243 

SC250 

67733 

67734 

— 

— 

— 

— 

2-9/16 3-3/4 1 SC256 67735 — — 

2-11/16 

2-3/4 

4 1-1/8 

SC268 

SC275 

67736 

67737 

— 

— 

— 

— 

2-15/16 

3 

4 1-1/8 

SC293 

SC300 

67738 

67739 

— 

— 

— 

—

THREADED TYPE CSC/CSSC SERIES 


MATERIAL 

OUTSIDE 

DIA. WIDTH 

CLAMP SCREW 

Steel—Low Carbon, Black Oxide Finish 

Stainless—Type 303 Austenitic 


BORE 

DESIGN PROVIDES CONVENIENT SETTING, ADJUSTING AND 

REMOVAL - prevents shaft damage. 

OSHA CONFORMANCE - collars have completely recessed screw 

head. 

BORE THREADS FROM 10-32 TO 1 1/4-12 



Steel Stainless Steel 

Bore Outside Clamp Catalog Item Catalog Item 

Thread Dia. Width Screws Number Code Number Code 

1/4-20 CSC25-20 49238 CSSC25-20 49265 

1/4-28 

5/16-18 

13/16 1/4 4-40 

CSC25-28 

CSC31-18 

49239 

49240 

— 

— 

— 

— 

5/16-24 CSC31-24 49241 — — 

3/8-16 

3/8-24 

1-1/16 5/16 6-32 

CSC37-16 

CSC37-24 

49242 

49243 

CSSC37-16 

CSSC37-24 

49269 

49270 

1/2-13 

1/2-20 

1-1/4 3/8 8-32 

CSC50-13 

CSC50-20 

49244 

49245 

CSSC50-13 

CSSC50-20 

49271 

49272 

5/8-11 

5/8-18 

1-1/2 13/32 10-32 

CSC62-11 

CSC62-18 

49246 

49247 

CSSC62-11 

CSSC62-18 

49273 

49274 

3/4-10 

3/4-16 

1-3/4 1/2 1/4-28 

CSC75-10 

CSC75-16 

49248 

49249 

CSSC75-10 

CSSC75-16 

49275 

49276 

7/8-9 

7/8-14 

1-7/8 1/2 1/4-28 

CSC87-9 

CSC87-14 

49250 

49251 

— 

— 

— 

— 

1-8 

1-14 

2 1/2 1/4-28 

CSC100-8 

CSC100-14 

49252 

49253 

CSSC100-8 

CSSC100-14 

49279 

49280 

1-1/8-7 

1-1/8-12 

2-1/8 1/2 1/4-28 

CSC112-7 

CSC112-12 

49254 

49255 

— 

— 

— 

— 

1-1/4-7 

1-1/4-12 

2-1/4 1/2 1/4-28 

CSC125-7 

CSC125-12 

49256 

49257 

— 

CSSC125-12 

— 

49284 


1-PIECE TYPE CSC/CSSC/CASC SERIES 

STEEL, STAINLESS STEEL AND ALUMINUM 



BORE All +.003 –.000 

MATERIAL 

Steel—Low Carbon, Black Oxide FInish 


Aluminum—T6061 

LOAD DATA 

OUTSIDE 

DIA. WIDTH 

CLAMP SCREW 

Capacity is based on a standard steel, 

one-piece collar mounted with recommended 

screw torque on a lightly oiled 

shaft. Capacity is load to move collar 

.010". Data shown is for guidance only. 

In applications involving control of axial 

loads, capacity should be determined 

experimentally on actual parts involved. 

Axial 

Recommended 

Screw 

Torque 

Load (Lb. Ins.) 

Capacity Screw Stainless 

Bore (Lbs.) Size Steel Steel 

1/8–5/16 400 4-40 20 16 

3/8–7/16 600 6-32 30 24 

1/2–9/16 1400 8-32 55 35 

5/8–11/16 1800 10-32 90 72 

3/4–1-9/16 4000 1/4-28 220 170 

1-5/8–2-3/8 6500 5/16-24 435 340 

2-7/16–3 8500 3/8-24 710 550 


BORE 



REMOVAL prevents shaft damage. 

OSHA CONFORMANCE collars have completely recessed screw head. 




Steel Stainless Steel Aluminum 

Outside Clamp Catalog Item Catalog Item Catalog Item 

Bore Dia. Width Screws Number Code Number Code Number Code 

1/8 CSC12 49000 CSSC12 49094 — — 

3/16 

1/4 

13/16 1/4 4-40 

CSC18 

CSC25 

49001 

49002 

CSSC18 

CSSC25 

49095 

49096 

CASC18 

CASC25 

49048 

49049 

5/16 CSC31 49003 CSSC31 49097 CASC31 49050 

3/8 

7/16 

1-1/16 5/16 6-32 

CSC37 

CSC43 

49004 

49005 

CSSC37 

CSSC43 

49098 

49099 

CASC37 

— 

49051 

— 

1/2 

9/16 

1-1/4 3/8 8-32 

CSC50 

CSC56 

49006 

49007 

CSSC50 

CSSC56 

49100 

49101 

CASC50 

CASC56 

49053 

49054 

5/8 

11/16 

1-1/2 13/32 10-32 

CSC62 

CSC68 

49008 

49009 

CSSC62 

— 

49102 

— 

CASC62 

— 

49055 

— 

3/4 

13/16 

1-3/4 

CSC75 

CSC81 

49010 

49011 

CSSC75 

— 

49104 

— 

CASC75 

— 

49057 

— 

7/8 

15/16 

1-7/8 

CSC87 

CSC93 

49012 

49013 

CSSC87 

CSSC93 

49106 

49107 

CASC87 

— 

49059 

— 

1 

1-1/16 

2 

CSC100 

CSC106 

49014 

49015 

CSSC100 49108 CASC100 49061 

CSSC106 49109 — — 

1-1/8 

1-3/16 

2-1/8 1/2 1/4-28 

CSC112 

CSC118 

49016 

49017 

CSSC112 49110 

CSSC118 49111 

— 

— 

— 

— 

1-1/4 

1-5/16 

2-1/4 

CSC125 

CSC131 

49018 

49019 

CSSC125 49112 CASC125 49065 

CSSC131 49113 — — 

1-3/8 

1-7/16 

2 3/8 

CSC137 

CSC143 

49020 

49021 

— — 

CSSC143 49115 

— 

— 

— 

— 

1-1/2 

1-9/16 

2-1/2 

CSC150 

CSC156 

49022 

49023 

CSSC150 49116 CASC150 49069 

— — — — 

1-5/8 CSC162 49024 — — — — 

1-11/16 3 CSC168 49025 — — — — 

1-3/4 CSC175 49026 — — CASC175 49073 

1-7/8 CSC187 49028 — — — — 

1-15/16 3-1/4 5/8 5/16-24 CSC193 49029 CSSC193 49123 — — 

2 CSC200 49030 CSSC200 49124 CASC200 49077 

2-3/16 CSC218 49033 — — — — 

2-1/4 3-1/2 CSC225 49034 — — — — 

2-3/8 CSC237 49036 — — — — 

2-7/16 

2-1/2 

4 

CSC243 

CSC250 

49037 

49038 

— 

— 

— 

— 

— 

— 

— 

— 

2-5/8 CSC262 49040 — — — — 

2-11/16 4-1/4 3/4 3/8-24 CSC268 49041 — — — — 

2-3/4 CSC275 49042 — — — — 

2-7/8 CSC287 49044 — — — — 

2-15/16 4-1/2 CSC293 49045 — — — — 

3 CSC300 49046 — — — —


2-PIECE TYPE 2SC/2SSC SERIES 


OUTSIDE 

DIA. 

CLAMP SCREWS 

WIDTH 

BORE 



BORE All +.003 –.000 

MATERIAL 

Steel—Low Carbon, Black Oxide Finish 


LOAD DATA 

Capacity is based on a standard steel, onepiece 

collar mounted with recommended 

screw torque on a lightly oiled shaft. 

Capacity is load to move collar .010”. Data 

shown is for guidance only. In applications 

involving control of axial loads, capacity 

should be determined experimentally on 

actual parts involved. 

Axial 

Recommended 

Screw 

Torque 

Load (Lb. Ins.) 

Capacity Screw Stainless 

Bore (Lbs.) Size Steel Steel 

1/8–5/16 400 4-40 20 16 

3/8–7/16 600 6-32 30 24 

1/2–9/16 1400 8-32 55 35 

5/8–11/16 1800 10-32 90 72 

3/4–1-9/16 4000 1/4-28 220 170 

1-5/8–2-3/8 6500 5/16-24 435 340 

2-7/16–3 8500 3/8-24 710 550 


REMOVAL prevents shaft damage. 

OSHA CONFORMANCE collars have completely recessed screw head. 




Steel Stainless Steel 

Outside Clamp Catalog Item Catalog Item 

Bore Dia. Width Screws Number Code Number Code 

1/8 2SC12 49141 — — 

3/16 

1/4 

13/16 1/4 4-40 

2SC18 

2SC25 

49142 

49143 

— 

2SSC25 

— 

49190 

5/16 2SC31 49144 2SSC31 49191 

3/8 

7/16 

1-1/16 5/16 6-32 

2SC37 

2SC43 

49145 

49146 

2SSC37 

2SSC43 

49192 

49193 

1/2 

9/16 

1-1/4 3/8 8-32 

2SC50 

2SC56 

49147 

49148 

2SSC50 

2SSC56 

49194 

49195 

5/8 

11/16 

1-1/2 13/32 10-32 

2SC62 

2SC68 

49149 

49150 

2SSC62 

2SSC68 

49196 

49197 

3/4 

13/16 

1-3/4 

2SC75 

2SC81 

49151 

49152 

2SSC75 

— 

49198 

— 

7/8 

15/16 

1-7/8 

2SC87 

2SC93 

49153 

49154 

2SSC87 

— 

49200 

— 

1 

1-1/16 

2 

2SC100 

2SC106 

49155 

49156 

2SSC100 

2SSC106 

49202 

49203 

1-1/8 

1-3/16 

2-1/8 

1/2 1/4-28 2SC112 

2SC118 

49157 

49158 

2SSC112 

2SSC118 

49204 

49205 

1-1/4 

1-5/16 

2-1/4 

2SC125 

2SC131 

49159 

49160 

2SSC125 

2SSC131 

49206 

49207 

1-3/8 

1-7/16 

2-3/8 

2SC137 

2SC143 

49161 

49162 

— 

2SSC143 

— 

49209 

1-1/2 

1-9/16 

2-1/2 

2SC150 

2SC156 

49163 

49164 

2SSC150 

— 

49210 

— 

1-5/8 2SC162 49165 — — 

1-11/16 3 2SC168 49166 — — 

1-3/4 2SC175 49167 — — 

1-7/8 2SC187 49169 2SSC187 49216 

1-15/16 3-1/4 5/8 5/16-24 2SC193 49170 2SSC193 49217 

2 2SC200 49171 2SSC200 49218 

2-1/8 2SC212 49173 — — 

2-3/16 

2-1/4 

3-1/2 

2SC218 

2SC225 

49174 

49175 

— 

— 

— 

— 

2-3/8 2SC237 49177 — — 

2-7/16 

2-1/2 

4 

2SC243 

2SC250 

49178 

49179 

— 

— 

— 

— 

2-5/8 2SC262 49181 — — 

2-11/16 4-1/4 3/4 3/8-24 

2SC268 49182 — — 

2-3/4 2SC275 49183 — — 

2-7/8 2SC287 49185 — — 

2-15/16 4-1/2 2SC293 49186 — — 

3 2SC300 49187 — — 



NOTES

THRUST WASHERS 

WASHERS & BUSHINGS 

STEEL & STAINLESS STEEL.........................................................................................................114 

BUSHINGS 

SOFT STEEL....................................................................................................................................115 

GROOVED PULLEYS 


ROUND BELT................................................................................................................................116 



HARDENED STEEL 

Bore Outside Diameter Thickness Catalog No. 

9/32 

1/16 

3/32 

18800 

18802 

3/16 

3/8 

1/16 

3/32 

18804 

18806 

7/16 1/16 06724 * 

1/4 

1/2 

1/16 

3/32 

18808 

18810 

9/16 1/16 06726 * 

5/64 06728 * 

5/16 5/8 1/16 18812 

1/8 18814 

3/8 

5/8 

1/16 

1/8 

18816 

18818 

11/16 3/32 06730 * 

7/16 7/8 

1/16 

5/32 

18820 

18822 

3/4 

1/16 

1/8 

18824 

18826 

1/2 

7/8 1/8 06734 * 

1-1/8 

1/16 

5/32 

18828 

18830 

1-1/4 3/16 18832 

9/16 1-3/8 

3/32 

3/16 

18834 

18836 

25/32 

1/16 

1/8 

18838 

18840 

5/8 

1-1/4 

1-3/8 

3/32 

3/16 

3/16 

18842 

18844 

18846 

1-1/2 

3/32 

3/16 

18848 

18850 

1-3/4 3/16 18852 

1 3/32 18854 

1-5/16 

3/32 

3/16 

18856 

18858 

3/4 

1-5/8 

1/8 

3/16 

18860 

18862 

1-3/4 3/16 18864 

2 3/16 18866 


THRUST WASHERS 

HARDENED AND GROUND 

STEEL BORE SIZES FROM 3/16" TO 2" 

STAINLESS STEEL BORE SIZES FROM 3/16" TO 1/2" 





BORE 

06700 Series 

18000 Series 

+.0015 – .007 

+.002 +.007 

O.D. 

06700 Series 

18000 Series 

+.000 – .005 

±.030 

Thickness All +.000 – .005 

HARDENED STEEL 


1-3/16 3/32 18868 

7/8 

2 

2 

1/8 

3/16 

18870 

18872 

2-1/4 3/16 18874 

7/16 13/16 3/32 06732 * 

1-9/16 

1/8 

3/16 

18876 

18878 

1 

2 

1/8 

3/16 

18880 

18882 

2-1/4 

9/64 

3/16 

18884 

18886 

2-1/2 1/4 18888 

1-1/16 2-1/2 1/4 18890 

1-1/8 2-1/2 1/4 18894 

1-3/16 2 3/16 18896 

2 

9/64 

3/16 

18898 

18922 

1-1/4 2-7/16 

9/64 

1/4 

18900 

18924 

2-3/4 9/64 18902 

3 1/4 18904 

1-5/16 2-3/4 1/4 18906 

1-3/8 3 

5/32 

1/4 

18908 

18910 

1-1/2 

3 

5/32 

1/4 

18912 

18914 

3-1/4 1/8 18916 

2 4 

5/32 

5/16 

18918 

18920 

STAINLESS STEEL † 


3/16 7/16 1/16 06760 

1/4 9/16 1/16 06762 

5/16 5/8 5/64 06764 

3/8 11/16 3/32 06766 

1/2 7/8 1/8 06770 

*These Washers also listed with AO Bearings. 

†These Washers also listed with SAO Bearings.

SOFT STEEL 

BORE 

OUTSIDE 

DIA. 


LENGTH 


BORE All ±.0005 

O.D. 

Up to 1-1/4 

Over 1-1/4 

+.0005 +.0015 

+.001 +.002 

LENGTH 

Up to 1” 

Over 1” 

+.000 –.007 

+.000–.010 

BUSHINGS 


MULTI-PURPOSE BUSHINGS suitable for use as hole reducers, 

spacers, standoffs or slip bushings. 

ADAPTABLE FOR OTHER USES including wear sleeves, liners or 

cutting arbor studs. 



Bore Outside Diameter Length Catalog No. 

1/4 18510 

3/16 5/16 5/8 18512 

3/8 18516 

1/4 

5/16 

3/8 

1/2 

5/8 

3/4 

1 

18514 

18518 

18522 

18524 

3/8 5/8 18520 

5/16 

1/2 

3/4 

1 

18526 

18528 

3/8 

1/2 

5/8 

3/4 

1 

3/4 

1-1/4 

18530 

18532 

18534 

18536 

7/16 5/8 

3/4 

1-1/4 

18538 

18540 

3/4 18542 

5/8 1 18544 

1/2 1-1/4 18546 

3/4 

3/4 

1 

18554 

18556 

5/8 

3/4 

3/4 

1 

18560 

18562 

7/8 1-1/4 18566 

7/8 1-1/4 18568 

3/4 

1 

1-3/8 

1-1/2 

2 

18574 

18626 

1-1/2 1-1/2 18606 

7/8 1 1-1/2 18576 

1-1/4 18596 

1 1-3/8 2 18602 

2 18622 

1-1/8 1-1/4 2 18598 

1-3/8 2 18604 

1-1/4 1-1/2 1-1/2 18614 

2 2 18624 


ROUND BELT TYPE G1200 

FACE 

WIDTH 

OUTSIDE 

DIA. 

BORE 



BORE All +.001 –.000 


SETSCREW 

HUB 

PROJ. 

GROOVED PULLEYS 

HUB 

DIA. 

BRASS AND IRON 

BORE SIZES FROM 3/16" TO 3/4" 




Outside Hub V Catalog Item 

Bore Dia. Dia. Proj. Groove Style Number Code 

BRASS—3/16" ROUND BELT (or smaller)—1/4" FACE 

3/16 

1/2 

7/8 

1/2 

5/8 

1/4 

74° 

46° 

Plain 

G1214 

G1215 

18700 

18702 

1/4 

1 

1-1/2 

5/8 5/16 46° Plain 

G1216 

G1217 

18704 

18706 

2 5/8 Webbed G1218 18708 

5/16 3 3/4 5/16 46° Spoked G1219 18710 

4 3/4 Spoked G1220 18712 

IRON †—3/8" ROUND BELTS (or smaller)—1/2" FACE 

1 15/16 G1202 * 18718 

1/2 

1-1/2 1 

1/2 

Plain G1203 * 2 1 G1204 

18720 

* 18722 

5/8 

3 

4 

5 

1-1/4 

1-5/8 3/4 

53° 

Webbed 

G1205 

G1206 

G1207 

18724 

18726 

18728 

3/4 

6 

8 

1-3/4 1 

Spoked 

G1208 

G1209 

18730 

18732 

†Outside diameter, sides, grooves, hole and ends of hub, finished.

MINIATURE TIMING BELTS & PULLEYS 


MINIATURE TIMING BELT & PULLEY SELECTION....................................................................118 – 120 

MINIATURE TIMING BELTS, 6 & 9mm WIDTHS....................................................................................121 

TIMING BELT PULLEYS, FOR 6 & 9mm WIDE BELTS...............................................................122 – 126 

MINIATURE TIMING BELTS, 9 & 15mm WIDTHS..................................................................................127 

TIMING BELT PULLEYS, FOR 9 & 15mm WIDE BELTS ............................................................128 – 131 



MINIATURE HTD ® TIMING BELT DRIVES 

BASIC CONSTRUCTION 

Timing belts are essentially flat belts with the addition of evenly 

spaced teeth along the surface that contacts toothed pulleys. 

Power is transmitted smoothly and without slippage. 

Pulley pitch diameters are larger than their outside diameters 

and the belt pitch lines lie within the flat portion. Tension members 

are molded in the flat portion to serve as load-carrying 

elements. Miniature HTD timing belts have deep curvilinear 

tooth forms, as contrasted to trapezoidal for conventional timing 

belts. Greater strength, lower tooth pressures and 

decreased stress concentration result in superior performance. 

SELECTION 

The following general guidelines apply to selection of miniature 

HTD timing belts and pulleys: 

Design with ample reserve horsepower capacity and 

apply the proper service factors. 

The belt must have six or more teeth in engagement with 

the smaller pulley to carry rated Horsepower. 

Avoid small pulley diameters where practical to assure 

satisfactory belt life. 

Belt speed should not exceed 6500 feet per minute. 

At least one pulley in the drive should be flanged. 

For vertical shafts or where center distance exceeds eight 

times the smaller pulley diameter, both pulleys should be 

flanged. 

® Registered trademark of Uniroyal, Inc. 


Horsepower Rating Tables provide ratings for operation no 

more than ten hours per day under uniform loading. Selection 

procedure is as follows: 

1. Select Service Factor from chart below. 

2. Determine Design Horsepower. 

Design Horsepower = Application Horsepower x Service Factor. 

3. Select small pulley and belt size from the rating tables, 

choosing a combination whose rating does not exceed 

the Design Horsepower. 

4. For speed increasing applications an additional 

amount must be added to the Service Factor. 

5. For speeds, higher than shown in rating Tables, consult 

factory. 

SERVICE FACTORS 

Load Classification Service Factor 

Uniform to 10 hrs./day 1.0 

Uniform over 10 hrs./day 

Moderate Shock to 10 hrs./day 

1.5 

Moderate Shock over 10 hrs./day 

Heavy Shock to 10 hrs./day 

2.0 

Ratio Range 

SPEED-UP DRIVES 

Additional Factor 

1 through 1.24 0 

1.25 through 1.74 0.1 

1.75 through 2.49 0.2 

2.50 through 3.49 0.3 

3.50 and over 0.4


MINIATURE HTD TIMING BELT DRIVES (Continued) 

HORSEPOWER RATINGS 

RPM of Small Pulley 



3mm PITCH—6mm WIDE BELT 

NUMBER OF GROOVES ON THE SMALL PULLEY 

10 11 12 14 15 16 18 20 22 24 25 28 30 32 

PD .376 .414 .451 .526 .564 .602 .677 .752 .827 .902 .940 1.053 1.128 1.203 

100 .005 .005 .006 .007 .008 .009 .010 .011 .012 .013 .013 .016 .019 .020 

300 .016 .017 .018 .021 .023 .025 .029 .033 .037 .040 .041 .048 .055 .059 

500 .022 .024 .027 .030 .032 .035 .039 .043 .048 .053 .055 .062 .066 .070 

700 .031 .035 .037 .042 .046 .049 .054 .061 .068 .075 .078 .087 .092 .098 

1160 .040 .045 .050 .056 .061 .066 .072 .078 .089 .097 .101 .113 .120 .127 

1500 .052 .058 .064 .072 .078 .085 .093 .101 .115 .125 .130 .145 .155 .165 

1750 .061 .068 .075 .085 .091 .099 .108 .117 .134 .146 .152 .170 .182 .194 

2500 .067 .074 .080 .091 .101 .107 .117 .134 .148 .161 .168 .192 .200 .213 

3500 .094 .103 .113 .127 .141 .151 .165 .188 .207 .226 .236 .268 .278 .296 



10 11 12 14 15 16 18 20 22 24 25 28 30 32 

PD .376 .414 .451 .526 .564 .602 .677 .752 .827 .902 .940 1.053 1.128 1.203 

100 .007 .008 .009 .011 .013 .014 .016 .017 .019 .021 .022 .025 .030 .032 

300 .025 .027 .029 .033 .036 .040 .046 .052 .059 .063 .066 .076 .087 .092 

500 .035 .038 .043 .048 .051 .055 .062 .068 .076 .084 .088 .098 .104 .111 

700 .049 .056 .059 .067 .073 .078 .085 .096 .107 .119 .124 .138 .146 .156 

1160 .063 .071 .079 .089 .097 .104 .114 .123 .141 .154 .160 .179 .190 .203 

1500 .082 .092 .101 .114 .123 .135 .147 .160 .182 .198 .206 .230 .246 .263 

1750 .097 .108 .119 .135 .144 .157 .171 .185 .212 .231 .241 .269 .289 .308 

2500 .106 .117 .127 .144 .160 .169 .185 .212 .235 .255 .266 .304 .317 .338 

3500 .149 .163 .179 .201 .223 .239 .262 .298 .328 .358 .372 .425 .441 .470 



11 12 14 15 16 18 20 22 24 25 28 30 

PD .689 .752 .877 .940 1.003 1.128 1.253 1.379 1.504 1.566 1.754 1.880 

100 .021 .024 .027 .030 .033 .039 .042 .045 .051 .053 .063 .069 

300 .063 .069 .081 .090 .096 .108 .126 .138 .153 .159 .186 .204 

500 .090 .099 .117 .126 .132 .150 .165 .183 .198 .206 .231 .249 

700 .129 .138 .162 .174 .186 .210 .231 .255 .279 .291 .324 .348 

1160 .162 .180 .207 .225 .240 .270 .300 .327 .360 .375 .420 .447 

1500 .210 .231 .270 .291 .309 .348 .387 .423 .465 .484 .543 .579 

1750 .243 .270 .315 .339 .360 .405 .453 .495 .540 .562 .633 .675 

2500 .267 .291 .342 .366 .393 .441 .492 .540 .588 .613 .687 .735 

3500 .372 .405 .477 .510 .549 .615 .690 .756 .822 .856 .960 1.03 

Belt life will be reduced for ratings to the left of the heavy line. 



MINIATURE HTD TIMING BELT DRIVES (Continued) 

HORSEPOWER RATINGS 





11 12 14 15 16 18 20 22 24 28 30 

PD .689 .752 .877 .940 1.003 1.128 1.253 1.379 1.504 1.754 1.880 

100 .038 .043 .049 .054 .060 .071 .076 .082 .093 .115 .126 

300 .115 .126 .148 .164 .175 .197 .230 .252 .280 .340 .373 

500 .164 .181 .214 .230 .241 .274 .302 .335 .362 .423 .456 

700 .236 .252 .296 .318 .340 .384 .423 .467 .511 .593 .637 

1160 .296 .329 .379 .412 .439 .494 .549 .599 .659 .769 .819 

1500 .384 .423 .494 .533 .566 .637 .709 .775 .852 .995 1.06 

1750 .445 .494 .577 .621 .659 .742 .830 .907 .989 1.16 1.23 

2500 .489 .533 .626 .670 .720 .808 .901 .989 1.07 1.25 1.34 

3500 .681 .742 .874 .934 1.00 1.12 1.26 1.38 1.50 1.75 1.88 

Belt life will be reduced for ratings to the left of the heavy line. 

CENTER DISTANCE 

To calculate the approximate Belt Length: 

D1 – D2 

BL = 2C + + 1.57 (D1 + D2) 

4C 

An approximate formula for center distance of a timing belt drive is: 

Where: 

C = Center Distance—Inches 

P = Belt Pitch—Inches 

NB = Number of Teeth in Belt 

N 1 = Number of Grooves in larger Pulley 

N 2 = Number of Grooves in smaller Pulley 

BL = Belt Length 

D 1 = Pitch Diameter of larger Pulley 

D 2 = Pitch Diameter of smaller Pulley 

INSTALLATION SUGGESTIONS 

1. Use care in handling belts to avoid breakage of the reinforcing fibers. 

2. Make sure shafts are parallel and pulleys in alignment. 

3. Belt should fit snugly, neither too loose nor too tight. Avoid preload, which can cause premature failure. 

4. Provision for some Center Distance adjustment will ease the installation and permit proper initial fitting of belts.

MINIATURE HTD TIMING BELTS 

3mm Pitch 3M SERIES 

6 AND 9mm WIDTHS 


NEOPRENE—NYLON COVERED, FIBERGLASS REINFORCED 

AMBIENT TEMPERATURE RANGE— –18°C to +85°C 

BREAKING STRENGTH—6 mm WIDTH—74.4 KGS 

9 mm WIDTH—111.6 KGS 

2.41 MM. 

.095 IN. 

No. Pitch Length 6mm Belt Width 9mm Belt Width 

of Catalog Item Catalog Item 

Grooves mm Inch Number Code Number Code 

35 105 4.134 3M035060 54214 3M035090 54290 

37 111 4.370 3M037060 54215 3M037090 54291 

48 144 5.669 3M048060 54216 3M048090 54292 

49 147 5.787 3M049060 54217 3M049090 54293 

50 150 5.905 3M050060 54218 3M050090 54294 

52 156 6.142 3M052060 54219 3M052090 54295 

53 159 6.260 3M053060 54220 3M053090 54296 

56 168 6.614 3M056060 54221 3M056090 54297 

59 177 6.968 3M059060 54222 3M059090 54298 

60 180 7.087 3M060060 54223 3M060090 54299 

65 195 7.677 3M065060 54224 3M065090 54300 

67 201 7.913 3M067060 54225 3M067090 54301 

68 204 8.031 3M068060 54226 3M068090 54302 

69 207 8.150 3M069060 54227 3M069090 54303 

70 210 8.268 3M070060 54228 3M070090 54304 

71 213 8.386 3M071060 54229 3M071090 54305 

75 225 8.858 3M075060 54230 3M075090 54306 

78 234 9.213 3M078060 54231 3M078090 54307 

80 240 9.449 3M080060 54232 3M080090 54308 

84 252 9.921 3M084060 54233 3M084090 54309 

85 255 10.039 3M085060 54234 3M085090 54310 

88 264 10.394 3M088060 54235 3M088090 54311 

89 267 10.512 3M089060 54236 3M089090 54312 

90 270 10.630 3M090060 54237 3M090090 54313 

92 276 10.866 3M092060 54238 3M092090 54314 

94 282 11.102 3M094060 54239 3M094090 54315 

95 285 11.220 3M095060 54240 3M095090 54316 

96 288 11.339 3M096060 54241 3M096090 54317 

97 291 11.457 3M097060 54242 3M097090 54318 

99 297 11.693 3M099060 54243 3M099090 54319 

100 300 11.811 3M100060 54244 3M100090 54320 

104 312 12.283 3M104060 54245 3M104090 54321 

106 318 12.520 3M106060 54246 3M106090 54322 

111 333 13.110 3M111060 54247 3M111090 54323 

112 336 13.228 3M112060 54248 3M112090 54324 

113 339 13.346 3M113060 54249 3M113090 54325 

115 345 13.583 3M115060 54250 3M115090 54326 

119 357 14.055 3M119060 54251 3M119090 54327 

3 MM. 

.118 IN. 

1.17 MM. 

.046 IN. 





121 363 14.291 3M121060 54252 3M121090 54328 

128 384 15.118 3M128060 54253 3M128090 54329 

130 390 15.354 3M130060 54254 3M130090 54330 

132 396 15.591 3M132060 54255 3M132090 54331 

140 420 16.535 3M140060 54256 3M140090 54332 

145 435 17.126 3M145060 54257 3M145090 54333 

149 447 17.598 3M149060 54258 3M149090 54334 

153 459 18.071 3M153060 54259 3M153090 54335 

155 465 18.307 3M155060 54260 3M155090 54336 

158 474 18.661 3M158060 54261 3M158090 54337 

160 480 18.898 3M160060 54262 3M160090 54338 

162 486 19.134 3M162060 54263 3M162090 54339 

163 489 19.252 3M163060 54264 3M163090 54340 

167 501 19.724 3M167060 54265 3M167090 54341 

171 513 20.197 3M171060 54266 3M171090 54342 

175 525 20.670 3M175060 54267 3M175090 54343 

177 531 20.905 3M177060 54268 3M177090 54344 

179 537 21.142 3M179060 54269 3M179090 54345 

188 564 22.205 3M188060 54270 3M188090 54346 

192 576 22.677 3M192060 54271 3M192090 54347 

199 597 23.504 3M199060 54272 3M199090 54348 

200 600 23.622 3M200060 54273 3M200090 54349 

204 612 24.094 3M204060 54274 3M204090 54350 

211 633 24.921 3M211060 54275 3M211090 54351 

223 669 26.338 3M223060 54276 3M223090 54352 

237 711 27.992 3M237060 54277 3M237090 54353 

250 750 29.527 3M250060 54278 3M250090 54354 

251 753 29.646 3M251060 54279 3M251090 54355 

294 892 34.724 3M294060 54280 3M294090 54356 

315 945 37.205 3M315060 54281 3M315090 54357 

354 1062 41.811 3M354060 54282 3M354090 54358 

375 1125 44.291 3M375060 54284 3M375090 54360 

415 1245 49.016 3M415060 54285 3M415090 54361 

421 1263 49.724 3M421060 54286 3M421090 54362 

500 1500 59.055 3M500060 54287 3M500090 54363 

510 1530 60.235 3M510060 54288 3M510090 54364 

621 1863 73.346 3M621060 54289 3M621090 54365 


3mm PITCH PA SERIES 

ALUMINUM FOR 6mm WIDE BELTS 


DIMENSION TOLERANCES 

BORE All +.001 – .000 

10-26 Grooves +.002 – .000 

O.D. 28-48 Grooves +.003 – .000 

60-72 Grooves +.004 – .000 


TIMING BELT PULLEYS 

ALUMINUM ALLOY—CLEAR ANODIZED 


SETSCREW 

D/2 

C 

D 

BORE 

L 

FACE 

O.D. 

FLANGE 

DIAMETER 

FACE 

O.D. 



L 

D 

D/2 

C 

BORE 

FACE 

FLANGE 

DIAMETER 

O.D. 

L 

D 

D/2 

SETSCREW 

No. With Flanges Without Flanges 

of Pitch Face Flange Catalog Item Catalog Item 

Grooves Dia. O.D. B Width C D L Dia. Setscrew * Number Code Number Code 

10 

11 

.376 

.414 

.346 

.384 

.125 

.505 

.530 

.505 

.530 

#4-40 

PA3010DF060 

PA3011DF060 

54448 

54449 

— 

— 

— 

— 

12 .451 .421 .580 .580 PA3012DF060 54450 — — 

13 

14 

15 

.489 

.526 

.564 

.459 

.496 

.534 

.1875 

.282 

.610 

15/64 

.635 

.685 

9/16 

.610 

.635 

.685 

#6-40 

PA3013DF060 

PA3014DF060 

PA3015DF060 

54451 

54452 

54453 

— 

— 

— 

— 

— 

— 

16 .602 .572 .710 .710 PA3016DF060 54454 — — 

17 .639 .609 .740 .740 PA3017DF060 54455 — — 

18 .677 .647 .442 .790 PA3018DF060 54456 PA3018NF060 54471 

19 .714 .684 .468 .815 PA3019DF060 54457 PA3019NF060 54472 

20 .752 .722 .500 .895 PA3020DF060 54458 PA3020NF060 54473 

22 .827 .797 .562 .945 PA3022DF060 54459 PA3022NF060 54474 

24 

25 

.902 

.940 

.872 

.910 

.386 .625 

.625 

11/16 

1.025 

1.060 

PA3024DF060 

PA3025DF060 

54460 

54461 

PA3024NF060 

PA3025NF060 

54475 

54476 

26 .977 .947 .625 1.105 PA3026DF060 54462 PA3026NF060 54477 

28 1.053 1.023 .250 .701 19/64 1.173 PA3028DF060 54463 PA3028NF060 54478 

30 1.128 1.098 .776 1.250 PA3030DF060 54464 PA3030NF060 54479 

32 1.203 1.173 .851 1.323 #8-32 PA3032DF060 54465 PA3032NF060 54480 

34 1.278 1.248 .921 1.398 PA3034DF060 54466 PA3034NF060 54481 

36 1.353 1.323 1.000 1.473 PA3036DF060 54467 PA3036NF060 54482 

38 1.429 1.399 1.075 23/32 1.549 PA3038DF060 54468 PA3038NF060 54483 

40 1.504 1.474 1.150 1.625 PA3040DF060 54469 PA3040NF060 54484 

44 1.654 1.624 1.300 1.775 PA3044DF060 54470 PA3044NF060 54485 

48 1.805 1.775 .407 — — — PA3048NF060 54486 

50 1.880 1.850 — — — PA3050NF060 54487 

56 

60 

2.105 

2.256 

2.075 

2.226 

.3125 1.250 21/64 47/64 

— 

— 

— 

— 

— 

— 

PA3056NF060 

PA3060NF060 

54488 

54489 

62 2.331 2.301 — — — PA3062NF060 54490 

72 2.707 2.677 — — — PA3072NF060 54491 

*Pulleys with 10 to 13 grooves have one setscrew. All others have two at 90°. 

WITH FLANGES 

10-17 GROOVES 

WITHOUT FLANGES 

WITH FLANGES 

18-44 GROOVES 

C 

BORE





BORE All +.001 –.000 

10-26 Grooves +.002 –.000 

O.D. 28-48 Grooves +.003 –.000 

60-72 Grooves +.004 –.000 





No. With Flanges Without Flanges 


Grooves Dia. O.D. B Width C D L Dia. Setscrew* Number Code Number Code 

10 

11 

.376 

.414 

.346 

.384 

.125 

.505 

.530 

.505 

.530 #4-40 

PA3010DF090 

PA3011DF090 

54492 

54493 

— 

— 

— 

— 

12 .451 .421 .580 .580 PA3012DF090 54494 — — 

13 

14 

15 

.489 

.526 

.564 

.459 

.496 

.534 

.1875 

.401 

.610 

15/64 

.635 

.685 

11/16 

.610 

.635 

.685 #6-40 

PA3013DF090 

PA3014DF090 

PA3015DF090 

54495 

54496 

54497 

— 

— 

— 

— 

— 

— 

16 .602 .572 .710 .710 PA3016DF090 54498 — — 

17 .639 .609 .740 .740 PA3017DF090 54499 — — 

18 .677 .647 .442 .790 PA3018DF090 54500 PA3018NF090 54515 

19 .714 .684 .468 .815 PA3019DF090 54501 PA3019NF090 54516 

20 .752 .722 .500 .895 PA3020DF090 54502 PA3020NF090 54517 

22 .827 .797 .562 .945 PA3022DF090 54503 PA3022NF090 54518 

24 

25 

.902 

.940 

.872 

.910 

.506 .625 

.625 

13/16 

1.025 

1.060 

PA3024DF090 

PA3025DF090 

54504 

54505 

PA3024NF090 

PA3025NF090 

54519 

54520 

26 .977 .947 .625 1.105 PA3026DF090 54506 PA3026NF090 54521 

28 1.053 1.023 .250 .701 19/64 1.173 PA3028DF090 54507 PA3028NF090 54522 

30 1.128 1.098 .776 1.250 PA3030DF090 54508 PA3030NF090 54523 

32 1.203 1.173 .851 1.323 #8-32 PA3032DF090 54509 PA3032NF090 54524 

34 1.278 1.248 .921 1.398 PA3034DF090 54510 PA3034NF090 54525 

36 1.353 1.323 1.000 1.473 PA3036DF090 54511 PA3036NF090 54526 

38 1.429 1.399 .527 1.075 27/32 1.549 PA3038DF090 54512 PA3038NF090 54527 

40 1.504 1.474 1.150 1.625 PA3040DF090 54513 PA3040NF090 54528 

44 1.654 1.624 1.300 1.775 PA3044DF090 54514 PA3044NF090 54529 

48 1.805 1.775 — — — PA3048NF090 54530 

50 1.880 1.850 — — — PA3050NF090 54531 

56 

60 

2.105 

2.256 

2.075 

2.226 

.3125 .500 1.250 3/8 7/8 

— 

— 

— 

— 

— 

— 

PA3056NF090 

PA3060NF090 

54532 

54533 

62 2.331 2.301 — — — PA3062NF090 54534 

72 2.707 2.677 — — — PA3072NF090 54535 

*Pulleys with 10 to 13 grooves have one setscrew. All others have two at 90°. 


SETSCREW 

C 

BORE 

WITH FLANGES 

10-17 GROOVES 

D 

D/2 

L 

FACE 

O.D. 

FLANGE 

DIAMETER 

FACE 

O.D. 

L 

D 

D/2 

C 

BORE 

FACE 

FLANGE 

DIAMETER 

WITHOUT FLANGES 

WITH FLANGES 

18-44 GROOVES 

O.D. 

L 

D 

D/2 

SETSCREW 

C 

BORE 


3mm PITCH PL SERIES 

LEXAN FOR 9mm WIDE BELTS 



BORE All +.001 –.000 



LEXAN—FIBERGLASS REINFORCED 

1/2 

L 

O.D. B C F.D. 

O.D. B 

L 

FACE 

D 

D 

FACE 

C F.D. 



FACE 

3/16 

O.D. 

D 

O.D. B C 

No. Single Flange Double Flange 


Grooves Dia. O.D. B Width C D L Dia. Number Code Number Code 

10 .376 .346 PL3010SF090 54536 PL3010DF090 54560 

11 

12 

.414 

.451 

.384 

.421 

5/8 

3/4* 

.63 PL3011SF090 

PL3012SF090 

54537 

54538 

PL3011DF090 

PL3012DF090 

54561 

54562 

13 

14 

.489 

.526 

.459 

.496 

.69 

PL3013SF090 

PL3014SF090 

54539 

54540 

PL3013DF090 

PL3014DF090 

54563 

54564 

15 .564 .534 3/16 .73 PL3015SF090 54541 PL3015DF090 54565 

16 .602 .572 .78 PL3016SF090 54542 PL3016DF090 54566 

17 .639 .609 11/16 ,87 PL3017SF090 54543 PL3017DF090 54567 

18 .677 .647 1/4 .93 PL3018SF090 54544 PL3018DF090 54568 

19 .714 .684 .93 PL3019SF090 54545 PL3019DF090 54569 

20 .752 .722 7/16 .93 PL3020SF090 54546 PL3020DF090 54570 

22 .827 .797 13/16 1.06 PL3022SF090 54547 PL3022DF090 54571 

25 .940 .910 1.19 PL3025SF090 54548 PL3025DF090 54572 

28 1.053 1.023 3/4 1.24 PL3028SF090 54549 PL3028DF090 54573 

32 1.203 1.173 1/4 1.44 PL3032SF090 54550 PL3032DF090 54574 

36 1.353 1.323 1.57 PL3036SF090 54551 PL3036DF090 54575 

40 1.504 1.474 1.76 PL3040SF090 54552 PL3040DF090 54576 

48 1.805 1.775 2.02 PL3048SF090 54553 PL3048DF090 54577 

60 2.256 2.226 7/8 2.46 PL3060SF090 54554 PL3060DF090 54578 

72 2.707 2.677 13/16 ** 2.92 PL3072SF090 54555 PL3072DF090 54579 

80 3.008 2.978 5/16 5/16 3.29 PL3080SF090 54556 PL3080DF090 54580 

84 

96 

120 

3.158 

3.609 

4.511 

3.128 

3.579 

4.481 3/8 1/2 

1 

3/8 

13/16 

7/8 

3.38 

3.83 

— 

PL3084SF090 

PL3096SF090 

PL3120NF090 

54557 

54558 

— 

— 

— 

— 

† 54559 — — 

*13/16" for Double Flanges. 

**7/8" for Double Flanges. 

†No Flange. 

SINGLE FLANGE 

10-28 GROOVES 

DOUBLE FLANGE 

10-28 GROOVES 

SINGLE FLANGE 

32-120 GROOVES 

3/16 

L 

B 

L 

D 

C 

FACE 

F.D . 

DOUBLE FLANGE 

32-80 GROOVES 

F.D .

3mm PITCH PLB SERIES 




BORE All +.001 –.000 



KNURLED ALUMINUM INSERTS 


O.D. B 

SINGLE FLANGE 

10-16 GROOVES 

DOUBLE FLANGE 

10-16 GROOVES 




of Pitch Face Insert Flange Catalog Item Catalog Item 

Grooves Dia. O.D. B Width C D Dia. L Dia. Setscrew Number Code Number Code 

10 .376 .346 PLB3010SF090 54581 PLB3010DF090 54633 

11 .414 .384 5/8 .63 PLB3011SF090 54582 PLB3011DF090 54634 

12 .451 .421 3/4 PLB3012SF090 54583 PLB3012DF090 54635 

13 

14 

.489 

.526 

.459 3/16 

.496 

.69 

PLB3013SF090 

PLB3014SF090 

54584 PLB3013DF090 

54585 PLB3014DF090 

54636 

54637 

15 .564 .534 .73 PLB3015SF090 54586 PLB3015DF090 54638 

16 .602 .572 .78 PLB3016SF090 54587 PLB3016DF090 54639 

17 .639 .609 

3/16 

1/4 3/8 .87 #6-32 

PLB3017SF090-3/16 54588 PLB3017DF090-3/16 54640 

PLB3017SF090-1/4 54589 PLB3017DF090-1/4 54641 

18 .677 .647 

3/16 

1/4 7/16 

11/16 1/4 PLB3018SF090-3/16 54590 PLB3018DF090-3/16 54642 

PLB3018SF090-1/4 54591 PLB3018DF090-1/4 54643 

19 .714 .684 3/16 

1/4 

.93 

PLB3019SF090-3/16 54592 PLB3019DF090-3/16 54644 

PLB3019SF090-1/4 54593 PLB3019DF090-1/4 54645 

20 .752 .722 

3/16 

1/4 

13/16 PLB3020SF090-3/16 54594 PLB3020DF090-3/16 54646 

PLB3020SF090-1/4 54595 PLB3020DF090-1/4 54647 

22 .827 .797 

3/16 

1/4 

1.06 PLB3022SF090-3/16 54596 PLB3022DF090-3/16 54648 

PLB3022SF090-1/4 54597 PLB3022DF090-1/4 54649 

1/4 PLB3025SF090-1/4 54598 PLB3025DF090-1/4 54650 

25 .940 .910 5/16 1.19 PLB3025SF090-5/16 54599 PLB3025DF090-5/16 54651 

3/8 

1/4 

3/4 1/2 

#8-32 

PLB3025SF090-3/8 

PLB3028SF090-1/4 

54600 PLB3025DF090-3/8 

54601 PLB3028DF090-1/4 

54652 

54653 

28 1.053 1.023 5/16 1.24 PLB3028SF090-5/16 54602 PLB3028DF090-5/16 54654 

3/8 PLB3028SF090-3/8 54603 PLB3028DF090-3/8 54655 

L 

D 

1 

8 

FACE 

L 

D 

1 

8 

FACE 

SETSCREW 

O.D. B A C F.D. 

SPOT 

DRILL 

SETSCREW 

A 

SPOT 

DRILL 

C F.D. 

SINGLE FLANGE 

17-28 GROOVES 

O.D. 

B 

3 

16 

SETSCREW 

L 

5 

32 

D 

A 

C F.D. 

SPOT DRILL 

FACE 

DOUBLE FLANGE 

17-28 GROOVES 

SETSCREW 

L 

D 

5 

32 

O.D. F.D. 

B A C 

3 

16 

FACE 

SPOT DRILL 






BORE All +.001 – .000 











1/4 PLB3032SF090-1/4 54604 PLB3032DF090-1/4 54656 

32 1.203 1.173 5/16 3/4 1.44 PLB3032SF090-5/16 54605 PLB3032DF090-5/16 54657 

3/8 PLB3032SF090-3/8 54606 PLB3032DF090-3/8 54658 

1/4 PLB3036SF090-1/4 54607 PLB3036DF090-1/4 54659 

36 1.353 1.323 5/16 1.57 PLB3036SF090-5/16 54608 PLB3036DF090-5/16 54660 

3/8 1/4 1/2 13/16 #8-32 PLB3036SF090-3/8 54609 PLB3036DF090-3/8 54661 

1/4 PLB3040SF090-1/4 54610 PLB3040DF090-1/4 54662 

40 1.504 1.474 5/16 1.76 PLB3040SF090-5/16 54611 PLB3040DF090-5/16 54663 

3/8 PLB3040SF090-3/8 54612 PLB3040DF090-3/8 54664 

1/4 PLB3048SF090-1/4 54613 PLB3048DF090-1/4 54665 

48 1.805 1.775 5/16 2.02 PLB3048SF090-5/16 54614 PLB3048DF090-5/16 54666 

3/8 PLB3048SF090-3/8 54615 PLB3048DF090-3/8 54667 

5/16 PLB3060SF090-5/16 54616 PLB3060DF090-5/16 54668 

60 2.256 2.226 3/8 7/16 7/8 2.46 PLB3060SF090-3/8 54617 PLB3060DF090-3/8 54669 

1/2 PLB3060SF090-1/2 54618 PLB3060DF090-1/2 54670 

5/16 PLB3072SF090-5/16 54619 PLB3072DF090-5/16 54671 

72 2.707 2.677 3/8 13/16 † 2.92 PLB3072SF090-3/8 54620 PLB3072DF090-3/8 54672 

1/2 PLB3072SF090-1/2 54621 PLB3072DF090-1/2 54673 

80 3.008 2.978 

5/16 

3/8 

5/16 

3.29 #10-32 

PLB3080SF090-5/16 54622 PLB3080DF090-5/16 54674 

PLB3080SF090-3/8 54623 PLB3080DF090-3/8 54675 

1/2 5/8 PLB3080SF090-1/2 54624 PLB3080DF090-1/2 54676 

5/16 PLB3084SF090-5/16 54625 — — 

84 3.158 3.128 3/8 3.38 PLB3084SF090-3/8 54626 — — 

1/2 

5/16 

13/16 

PLB3084SF090-1/2 54627 

PLB3096SF090-5/16 54628 

— 

— 

— 

— 

96 3.609 3.579 3/8 3.83 PLB3096SF090-3/8 54629 — — 

1/2 1 PLB3096SF090-1/2 54630 — — 

120 4.511 4.481 3/8 

1/2 3/8 7/8 — 

PLB3120NF090-3/8 * 1/2 PLB3120NF090-1/2 

54631 — — 

* 54632 — — 

†7/8” for Double Flange 

*No Flange 

SINGLE FLANGE DOUBLE FLANGE 

O.D. 

B 

3 

16 

SETSCREW 

L 

D 

5 

32 

A 

C F.D. 

SPOT DRILL 

FACE 

SETSCREW 

L 

D 

5 

32 

O.D. F.D. 

B A C 

3 

16 

FACE 

SPOT DRILL


5mm PITCH 5M SERIES 

9 and 15mm WIDTHS 

NEOPRENE—NYLON COVERED, FIBERGLASS REINFORCED 

AMBIENT TEMPERATURE RANGE— –18°C to +85°C 

BREAKING STRENGTH—9 mm WIDTH—234 KGS 

15 mm WIDTH—390 KGS 

3.56 MM. 

.140 IN. 


5 MM. 

.197 IN. 




64 320 12.598 — — 5M064150 54407 

66 330 12.992 5M066090 54367 5M066150 54408 

70 350 13.779 5M070090 54368 5M070150 54409 

75 375 14.764 5M075090 54369 5M075150 54410 

80 400 15.748 5M080090 54370 5M080150 54411 

85 425 16.732 5M085090 54371 5M085150 54412 

90 450 17.716 5M090090 54372 5M090150 54413 

95 475 18.700 5M095090 54373 5M095150 54414 

100 500 19.685 5M100090 54374 5M100150 54415 

104 520 20.472 5M104090 54375 5M104150 54416 

107 535 21.063 5M107090 54376 5M107150 54417 

113 565 22.244 5M113090 54377 5M113150 54418 

120 600 23.622 5M120090 54378 5M120150 54419 

123 615 24.213 5M123090 54379 5M123150 54420 

127 635 25.000 5M127090 54380 5M127150 54421 

133 665 26.181 5M133090 54381 5M133150 54422 

134 670 26.378 5M134090 54382 5M134150 54423 

142 710 27.953 5M142090 54383 5M142150 54424 

148 740 29.134 5M148090 54384 5M148150 54425 

151 755 29.724 5M151090 54385 5M151150 54426 

160 800 31.496 5M160090 54386 5M160150 54427 

166 830 32.677 5M166090 54387 5M166150 54428 

167 835 32.874 5M167090 54388 5M167150 54429 

170 850 33.464 5M170090 54389 5M170150 54430 

178 890 35.039 5M178090 54390 5M178150 54431 

185 925 36.417 5M185090 54391 5M185150 54432 

186 930 36.614 5M186090 54392 5M186150 54433 

190 950 37.401 5M190090 54393 5M190150 54434 

200 1000 39.370 5M200090 54394 5M200150 54435 

210 1050 41.339 5M210090 54395 5M210150 54436 

225 1125 44.291 5M225090 54396 5M225150 54437 

254 1270 50.000 5M254090 54397 5M254150 54438 

284 1420 55.905 5M284090 54398 5M284150 54439 

319 1595 62.795 5M319090 54399 5M319150 54440 

358 1790 70.472 5M358090 54400 5M358150 54441 

360 1800 70.866 5M360090 54401 5M360150 54442 

374 1870 73.622 5M374090 54402 5M374150 54443 

379 1895 74.606 5M379090 54403 5M379150 54444 

389 1945 76.575 5M389090 54404 5M389150 54445 

400 2000 78.740 5M400090 54405 5M400150 54446 

505 2525 99.409 5M505090 54406 5M505150 54447 

2.08 MM. 

.082 IN. 






BORE All +.001 – .000 

12–16 Grooves +.002 – .000 

O.D. 17–32 Grooves +.003 – .000 

34–62 Grooves +.004 – .000 

72 Grooves +.005 – .000 







No. With Flange Without Flange 



12 .752 .707 7/16 7/8 PA5012DF090 54677 PA5012NF090 54694 

13 .815 .770 1/2 15/16 PA5013DF090 54678 PA5013NF090 54695 

14 .877 .832 1/2 1 PA5014DF090 54679 PA5014NF090 54696 

15 .940 .895 9/16 1-1/16 PA5015DF090 54680 PA5015NF090 54697 

16 1.003 .958 9/16 1/4 51/64 1-3/32 PA5016DF090 54681 PA5016NF090 54698 

17 1.065 1.020 5/8 1-3/16 PA5017DF090 54682 PA5017NF090 54699 

18 1.128 1.083 11/16 1-1/4 PA5018DF090 54683 PA5018NF090 54700 

19 

20 

1.191 

1.253 

1.146 

1.208 

.250 

3/4 

13/16 

1-5/16 

1-3/8 

PA5019DF090 

PA5020DF090 

54684 

54685 

PA5019NF090 

PA5020NF090 

54701 

54702 

22 

24 

1.379 

1.504 

1.334 

1.459 

15/16 

1 

1-1/2 

1-5/8 

#8-32 

PA5022DF090 

PA5024DF090 

54686 

54687 

PA5022NF090 

PA5024NF090 

54703 

54704 

25 1.566 1.521 1 1-11/16 PA5025DF090 54688 PA5025NF090 54705 

26 1.629 1.584 1-1/16 1-3/4 PA5026DF090 54689 PA5026NF090 54706 

28 1.754 1.709 35/64 1-3/16 5/16 55/64 1-7/8 PA5028DF090 54690 PA5028NF090 54707 

30 1.880 1.835 1-3/16 2 PA5030DF090 54691 PA5030NF090 54708 

32 2.005 1.960 1-1/4 2-1/8 PA5032DF090 54692 PA5032NF090 54709 

34 2.130 2.085 1-3/8 2-1/4 PA5034DF090 54693 PA5034NF090 54710 

36 2.256 2.211 — — — PA5036NF090 54711 

38 

40 

2.381 

2.506 

2.336 

2.461 

— — — PA5038NF090 54712 

.3125 

— — — PA5040NF090 54713 

44 2.757 2.712 — — — PA5044NF090 54714 

48 3.008 2.963 1-1/2 25/64 15/16 — — — PA5048NF090 54715 

50 3.133 3.088 — — — PA5050NF090 54716 

56 

60 

3.509 

3.760 

3.464 

3.715 

.375 

— 

— 

#10-32 

— 

— 

— 

— 

PA5056NF090 

PA5060NF090 

54717 

54718 

62 3.885 3.840 — — — PA5062NF090 54719 

72 4.511 4.466 — — — PA5072NF090 54720 

*Pulleys with 12 and 13 grooves have one setscrew. All others have two at 90°. 

FACE 

FLANGE 

DIAMETER 

WITH FLANGE 

O.D. 

L 

D 

D/2 

SETSCREW 

C 

BORE 

WITHOUT FLANGE 

FACE 

O.D. 

L 

D 

D/2 

C 

BORE





BORE All +.001 – .000 

12–16 Grooves +.002 – .000 

O.D. 17–32 Grooves +.003 – .000 

34–62 Grooves +.004 – .000 

72 Grooves +.005 – .000 

*Pulleys with 12 and 13 grooves have one setscrew. All others have two at 90°. 

†44-72 grooves material is A356-T6 (cast). 


ALUMINUM ALLOY—CLEAR ANODIZED † 


FACE 

FLANGE 

DIAMETER 

WITH FLANGE 

O.D. 

WITHOUT FLANGE 



No. With Flange Without Flange 



12 .752 .707 7/16 7/8 PA5012DF150 54721 PA5012NF150 54738 

13 .815 .770 1/2 15/16 PA5013DF150 54722 PA5013NF150 54739 

14 .877 .832 1/2 1 PA5014DF150 54723 PA5014NF150 54740 

15 .940 .895 9/16 1-1/16 PA5015DF150 54724 PA5015NF150 54741 

16 1.003 .958 9/16 1/4 1-1/32 1-3/32 PA5016DF150 54725 PA5016NF150 54742 

17 1.065 1.020 5/8 1-3/16 PA5017DF150 54726 PA5017NF150 54743 

18 1.128 1.083 11/16 1-1/4 PA5018DF150 54727 PA5018NF150 54744 

19 1.191 1.146 3/4 1-5/16 PA5019DF150 54728 PA5019NF150 54745 

20 1.253 1.208 .250 13/16 1-3/8 PA5020DF150 54729 PA5020NF150 54746 

22 

24 

1.379 

1.504 

1.334 

1.459 

15/16 

1 

1-1/2 

1-5/8 

#8-32 

PA5022DF150 

PA5024DF150 

54730 

54731 

PA5022NF150 

PA5024NF150 

54747 

54748 

25 1.566 1.521 1 1-11/16 PA5025DF150 54732 PA5025NF150 54749 

26 1.629 1.584 1-1/16 1-3/4 PA5026DF150 54733 PA5026NF150 54750 

28 1.754 1.709 25/32 1-3/16 5/16 1-3/32 1-7/8 PA5028DF150 54734 PA5028NF150 54751 

30 1.880 1.835 1-3/16 2 PA5030DF150 54735 PA5030NF150 54752 

32 2.005 1.960 1-1/4 2-1/8 PA5032DF150 54736 PA5032NF150 54753 

34 2.130 2.085 1-3/8 2-1/4 PA5034DF150 54737 PA5034NF150 54754 

36 2.256 2.211 — — — PA5036NF150 54755 

38 

40 

2.381 

2.506 

2.336 

2.461 

.3125 

— 

— 

— 

— 

— 

— 

PA5038NF150 

PA5040NF150 

54756 

54757 

44 2.757 2.712 — — — PA5044NF150 54758 

48 3.008 2.963 1-1/2 13/32 1-3/16 — — — PA5048NF150 54759 

50 3.133 3.088 — — — PA5050NF150 54760 

56 

60 

3.509 

3.760 

3.464 

3.715 

.375 

— 

— 

#10-32 

— 

— 

— 

— 

PA5056NF150 

PA5060NF150 

54761 

54762 

62 3.885 3.840 — — — PA5062NF150 54763 

72 4.511 4.466 — — — PA5072NF150 54764 

L 

D 

D/2 

SETSCREW 

C 

BORE 

FACE 

O.D. 

L 

D 

D/2 

C 

BORE 


5mm PITCH PL SERIES 




BORE All +.001 – .000 

*7/8" for Double Flange. 




FACE 

3/16 

O.D. 

SINGLE FLANGE 



O.D. B C 



Grooves Dia. O.D. B Width C D L Dia. Number Code Number Code 

11 .689 .644 .87 PL5011SF090 54765 PL5011DF090 54782 

12 

13 

.752 

.815 

.707 

.770 

3/16 11/16 

.93 

.99 

PL5012SF090 

PL5013SF090 

54766 

54767 

PL5012DF090 

PL5013DF090 

54783 

54784 

14 .877 .832 1.06 PL5014SF090 54768 PL5014DF090 54785 

15 .940 .895 1.19 PL5015SF090 54769 PL5015DF090 54786 

16 1.003 .958 1.19 PL5016SF090 54770 PL5016DF090 54787 

17 1.065 1.020 3/4 1.24 PL5017SF090 54771 PL5017DF090 54788 

18 1.128 1.083 1/4 13/16 1.31 PL5018SF090 54772 PL5018DF090 54789 

19 1.191 1.146 7/16 1.38 PL5019SF090 54773 PL5019DF090 54790 

20 1.253 1.208 1/4 1.44 PL5020SF090 54774 PL5020DF090 54791 

22 1.379 1.334 1.57 PL5022SF090 54775 PL5022DF090 54792 

25 1.566 1.521 1.76 PL5025SF090 54776 PL5025DF090 54793 

28 

29 

1.754 

1.817 

1.709 

1.772 

7/8 

1.95 

2.02 

PL5028SF090 

PL5029SF090 

54777 

54778 

PL5028DF090 

PL5029DF090 

54794 

54795 

30 1.880 1.835 2.08 PL5030SF090 54779 PL5030DF090 54796 

40 2.506 2.461 

5/16 5/16 13/16 * 50 3.133 3.088 

2.71 

3.29 

PL5040SF090 

PL5050SF090 

54780 

54781 

PL5040DF090 

PL5050DF090 

54797 

54798 

L 

B 

D 

C 

F.D. 

DOUBLE FLANGE 

3/16 

L 

D 

FACE 

F.D.








BORE All +.001 – .000 




11 .689 .644 3/16 

1/4 

.87 

PLB5011SF090-3/16 

PLB5011SF090-1/4 

54799 

54800 

PLB5011DF090-3/16 54846 

PLB5011DF090-1/4 54847 

12 .752 .707 3/16 

13 .815 

1/4 

.770 

11/16 3/8 

.93 

#6-32 

PLB5012SF090-3/16 

PLB5012SF090-1/4 

54801 

54802 

PLB5012DF090-3/16 54848 

PLB5012DF090-1/4 54849 

3/16 

1/4 

.99 

PLB5013SF090-3/16 

PLB5013SF090-1/4 

54803 

54804 

PLB5013DF090-3/16 54850 

PLB5013DF090-1/4 54851 

14 .877 .832 3/16 

1/4 

1.06 

PLB5014SF090-3/16 

PLB5014SF090-1/4 

54805 

54806 

PLB5014DF090-3/16 54852 

PLB5014DF090-1/4 54853 

1/4 PLB5015SF090-1/4 54807 PLB5015DF090-1/4 54854 

15 .940 .895 5/16 1.19 PLB5015SF090-5/16 54808 PLB5015DF090-5/16 54855 

3/8 PLB5015SF090-3/8 54809 PLB5015DF090-3/8 54856 

1/4 PLB5016SF090-1/4 54810 PLB5016DF090-1/4 54857 

16 1.003 .958 5/16 1.19 PLB5016SF090-5/16 54811 PLB5016DF090-5/16 54858 

3/8 PLB5016SF090-3/8 54812 PLB5016DF090-3/8 54859 

1/4 PLB5017SF090-1/4 54813 PLB5017DF090-1/4 54860 

17 1.065 1.020 5/16 1.24 PLB5017SF090-5/16 54814 PLB5017DF090-5/16 54861 

3/8 

1/4 

3/4 

PLB5017SF090-3/8 

PLB5018SF090-1/4 

54815 

54816 

PLB5017DF090-3/8 

PLB5018DF090-1/4 

54862 

54863 

18 1.128 1.083 5/16 1.31 PLB5018SF090-5/16 54817 PLB5018DF090-5/16 54864 

3/8 PLB5018SF090-3/8 54818 PLB5018DF090-3/8 54865 

1/4 PLB5019SF090-1/4 54819 PLB5019DF090-1/4 54866 

19 1.191 1.146 5/16 1/4 13/16 1.38 PLB5019SF090-5/16 54820 PLB5019DF090-5/16 54867 

3/8 PLB5019SF090-3/8 54821 PLB5019DF090-3/8 54868 

1/4 PLB5020SF090-1/4 54822 PLB5020DF090-1/4 54869 

20 1.253 1.208 5/16 7/16 1/2 1.44 #8-32 PLB5020SF090-5/16 54823 PLB5020DF090-5/16 54870 

3/8 PLB5020SF090-3/8 54824 PLB5020DF090-3/8 54871 

1/4 PLB5022SF090-1/4 54825 PLB5022DF090-1/4 54872 

22 1.379 1.334 5/16 1.57 PLB5022SF090-5/16 54826 PLB5022DF090-5/16 54873 

3/8 PLB5022SF090-3/8 54827 PLB5022DF090-3/8 54874 

1/4 PLB5025SF090-1/4 54828 PLB5025DF090-1/4 54875 

25 1.566 1.521 5/16 1.76 PLB5025SF090-5/16 54829 PLB5025DF090-5/16 54876 

3/8 PLB5025SF090-3/8 54830 PLB5025DF090-3/8 54877 

1/4 PLB5028SF090-1/4 54831 PLB5028DF090-1/4 54878 

28 1.754 1.709 5/16 1.95 PLB5028SF090-5/16 54832 PLB5028DF090-5/16 54879 

3/8 PLB5028SF090-3/8 54833 PLB5028DF090-3/8 54880 

1/4 7/8 PLB5029SF090-1/4 54834 PLB5029DF090-1/4 54881 

29 1.817 1.772 5/16 2.02 PLB5029SF090-5/16 54835 PLB5029DF090-5/16 54882 

3/8 PLB5029SF090-1/4 54836 PLB5029DF090-1/4 54883 

1/4 PLB5030SF090-1/4 54837 PLB5030DF090-1/4 54884 

30 1.880 1.835 5/16 2.08 PLB5030SF090-5/16 54838 PLB5030DF090-5/16 54885 

3/8 PLB5030SF090-3/8 54839 PLB5030DF090-3/8 54886 

5/16 PLB5040SF090-5/16 54840 PLB5040DF090-5/16 54887 

40 2.506 2.461 3/8 2.71 PLB5040SF090-3/8 54841 PLB5040DF090-3/8 54888 

1/2 

5/16 5/8 13/16 * 5/16 

#10-32 

PLB5040SF090-1/2 

PLB5050SF090-5/16 

54842 

54843 

PLB5040DF090-1/2 54889 

PLB5050DF090-5/16 54890 

50 3.133 3.088 3/8 3.29 PLB5050SF090-3/8 54844 PLB5050DF090-3/8 54891 

1/2 PLB5050SF090-1/2 54845 PLB5050DF090-1/2 54892 

*7/8" for Double Flange. 


O.D. 

B 

3 

16 

SINGLE FLANGE 

SETSCREW 

L 

5 

32 

D 

A 

C F.D. 

SPOT DRILL 

FACE 

DOUBLE FLANGE 

SETSCREW 

L 

D 

5 

32 

O.D. F.D. 

B A C 

3 

16 

FACE 

SPOT DRILL

timing belt pulleys - Boston Gear

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